hello()
system
Hello , welcome to the Cambridge restaurant system? You can ask for restaurants by area , price range or food type . How may I help you?
inform((_:search,pricerange,'cheap');(_:search,type,'Restaurant'))
user
cheap restaurant
request((_:search,area,?);(_:search,type,'Restaurant'))
system
What part of town do you have in mind?
inform((_:search,area,'centre');(_:search,type,'Restaurant'))
user
center
request((_:search,food,?);(_:search,type,'Restaurant'))
system
What kind of food would you like?
user
unintelligible
confirm((_:search,type,'Restaurant'))
system
You are looking for a restaurant is that right?
inform((_:search,food,'vietnamese');(_:search,type,'Restaurant'))
user
vietnamese food
inform((_:result,area,'east');(_:result,name,'the missing sock');(_:result,pricerange,'cheap');(_:result,type,'Restaurant'))
system
the missing sock is a nice restaurant in the east of town in the cheap price range
user
food
reqmore()
system
Can I help you with anything else?
inform((_:search,food,'vietnamese');(_:search,type,'Restaurant'))
user
vietnamese food
canthelp((_:search,area,'east');(_:search,food,'vietnamese');(_:search,pricerange,'cheap');(_:search,type,'Restaurant'))
system
Sorry there is no cheap restaurant in the east of town serving vietnamese food
inform((_:search,area,'north');(_:search,type,'Restaurant'))
user
north
canthelp((_:search,area,'north');(_:search,food,'vietnamese');(_:search,pricerange,'cheap');(_:search,type,'Restaurant'))
system
Sorry there is no cheap restaurant in the north of town serving vietnamese food
inform((_:search,area,'centre');(_:search,type,'Restaurant'))
user
down town
canthelp((_:search,area,'north');(_:search,food,'vietnamese');(_:search,pricerange,'cheap');(_:search,type,'Restaurant'))
system
Sorry there is no cheap restaurant in the north of town serving vietnamese food
inform((_:search,area,'west');(_:search,type,'Restaurant'))
user
west
canthelp((_:search,area,'north');(_:search,food,'vietnamese');(_:search,pricerange,'cheap');(_:search,type,'Restaurant'))
system
Sorry there is no cheap restaurant in the north of town serving vietnamese food
inform((_:search,food,'vietnamese');(_:search,type,'Restaurant'))
user
cambridge vietnamese food
canthelp((_:search,area,'north');(_:search,food,'vietnamese');(_:search,pricerange,'cheap');(_:search,type,'Restaurant'))
system
Sorry there is no cheap restaurant in the north of town serving vietnamese food
inform((_:search,area,'centre');(_:search,type,'Restaurant'))
user
center
canthelp((_:search,area,'centre');(_:search,food,'vietnamese');(_:search,pricerange,'cheap');(_:search,type,'Restaurant'))
system
Sorry there is no cheap restaurant in the centre of town serving vietnamese food
inform((_:search,area,'east');(_:search,type,'Restaurant'))
user
east
canthelp((_:search,area,'east');(_:search,food,'vietnamese');(_:search,pricerange,'cheap');(_:search,type,'Restaurant'))
system
Sorry there is no cheap restaurant in the east of town serving vietnamese food
inform((_:search,area,'south');(_:search,type,'Restaurant'))
user
south
canthelp((_:search,area,'east');(_:search,food,'vietnamese');(_:search,pricerange,'cheap');(_:search,type,'Restaurant'))
system
Sorry there is no cheap restaurant in the east of town serving vietnamese food
inform((_:search,area,'east');(_:search,type,'Restaurant'))
user
north east
canthelp((_:search,area,'north');(_:search,food,'vietnamese');(_:search,pricerange,'cheap');(_:search,type,'Restaurant'))
system
Sorry there is no cheap restaurant in the north of town serving vietnamese food
inform((_:search,area,'west');(_:search,type,'Restaurant'))
user
west
canthelp((_:search,area,'north');(_:search,food,'vietnamese');(_:search,pricerange,'cheap');(_:search,type,'Restaurant'))
system
Sorry there is no cheap restaurant in the north of town serving vietnamese food
inform((_:search,area,'centre');(_:search,type,'Restaurant'))
user
center
canthelp((_:search,area,'centre');(_:search,food,'vietnamese');(_:search,pricerange,'cheap');(_:search,type,'Restaurant'))
system
Sorry there is no cheap restaurant in the centre of town serving vietnamese food
inform((_:search,pricerange,'moderate');(_:search,type,'Restaurant'))
user
moderate
canthelp((_:search,area,'centre');(_:search,food,'vietnamese');(_:search,pricerange,'moderate');(_:search,type,'Restaurant'))
system
Sorry there is no moderate restaurant in the centre of town serving vietnamese food
inform((_:search,area,'north');(_:search,type,'Restaurant'))
user
north
canthelp((_:search,area,'north');(_:search,food,'vietnamese');(_:search,pricerange,'moderate');(_:search,type,'Restaurant'))
system
Sorry there is no moderate restaurant in the north of town serving vietnamese food
inform((_:search,area,'east');(_:search,type,'Restaurant'))
user
east
canthelp((_:search,area,'east');(_:search,food,'vietnamese');(_:search,pricerange,'moderate');(_:search,type,'Restaurant'))
system
Sorry there is no moderate restaurant in the east of town serving vietnamese food
thanks() bye()
user
thank you goodbye
_:system greeted _:user
_:search pricerange cheap
_:search type Restaurant
_:system greeted _:user
_:search pricerange cheap
_:search area centre
_:search type Restaurant
_:system greeted _:user
_:search pricerange cheap
_:search area centre
_:search food ?
_:search type Restaurant
_:system greeted _:user
_:search pricerange cheap
_:search area centre
_:search food vietnamese
_:search type Restaurant
_:system greeted _:user
_:search pricerange cheap
_:search area centre
_:search food vietnamese
_:search type Restaurant
_:result area east
_:result name the missing sock
_:result pricerange cheap
_:result type Restaurant
_:system greeted _:user
_:search pricerange cheap
_:search area centre
_:result area east
_:result name the missing sock
_:result pricerange cheap
_:result type Restaurant
_:system inquired _:user
_:search food vietnamese
_:search type Restaurant
_:system greeted _:user
_:search pricerange cheap
_:result area east
_:result name the missing sock
_:result pricerange cheap
_:result type Restaurant
_:system inquired _:user
_:search food vietnamese
_:system canthelp _:search/f1b55fc8
_:search/f1b55fc8 area east
_:search/f1b55fc8 food vietnamese
_:search/f1b55fc8 pricerange cheap
_:search/f1b55fc8 type Restaurant
_:search area north
_:search type Restaurant
_:system greeted _:user
_:search pricerange cheap
_:result area east
_:result name the missing sock
_:result pricerange cheap
_:result type Restaurant
_:system inquired _:user
_:search food vietnamese
_:system canthelp _:search/f1b55fc8
_:search/f1b55fc8 area east
_:search/f1b55fc8 food vietnamese
_:search/f1b55fc8 pricerange cheap
_:search/f1b55fc8 type Restaurant
_:system canthelp _:search/3dede5aa
_:search/3dede5aa area north
_:search/3dede5aa food vietnamese
_:search/3dede5aa pricerange cheap
_:search/3dede5aa type Restaurant
_:search area centre
_:search type Restaurant
_:system greeted _:user
_:search pricerange cheap
_:result area east
_:result name the missing sock
_:result pricerange cheap
_:result type Restaurant
_:system inquired _:user
_:search food vietnamese
_:system canthelp _:search/f1b55fc8
_:search/f1b55fc8 area east
_:search/f1b55fc8 food vietnamese
_:search/f1b55fc8 pricerange cheap
_:search/f1b55fc8 type Restaurant
_:system canthelp _:search/3dede5aa
_:search/3dede5aa area north
_:search/3dede5aa food vietnamese
_:search/3dede5aa pricerange cheap
_:search/3dede5aa type Restaurant
_:system canthelp _:search/6206700b
_:search/6206700b area north
_:search/6206700b food vietnamese
_:search/6206700b pricerange cheap
_:search/6206700b type Restaurant
_:search area west
_:search type Restaurant
_:system greeted _:user
_:search pricerange cheap
_:result area east
_:result name the missing sock
_:result pricerange cheap
_:result type Restaurant
_:system inquired _:user
_:system canthelp _:search/f1b55fc8
_:search/f1b55fc8 area east
_:search/f1b55fc8 food vietnamese
_:search/f1b55fc8 pricerange cheap
_:search/f1b55fc8 type Restaurant
_:system canthelp _:search/3dede5aa
_:search/3dede5aa area north
_:search/3dede5aa food vietnamese
_:search/3dede5aa pricerange cheap
_:search/3dede5aa type Restaurant
_:system canthelp _:search/6206700b
_:search/6206700b area north
_:search/6206700b food vietnamese
_:search/6206700b pricerange cheap
_:search/6206700b type Restaurant
_:search area west
_:system canthelp _:search/4c01de0d
_:search/4c01de0d area north
_:search/4c01de0d food vietnamese
_:search/4c01de0d pricerange cheap
_:search/4c01de0d type Restaurant
_:search food vietnamese
_:search type Restaurant
_:system greeted _:user
_:search pricerange cheap
_:result area east
_:result name the missing sock
_:result pricerange cheap
_:result type Restaurant
_:system inquired _:user
_:system canthelp _:search/f1b55fc8
_:search/f1b55fc8 area east
_:search/f1b55fc8 food vietnamese
_:search/f1b55fc8 pricerange cheap
_:search/f1b55fc8 type Restaurant
_:system canthelp _:search/3dede5aa
_:search/3dede5aa area north
_:search/3dede5aa food vietnamese
_:search/3dede5aa pricerange cheap
_:search/3dede5aa type Restaurant
_:system canthelp _:search/6206700b
_:search/6206700b area north
_:search/6206700b food vietnamese
_:search/6206700b pricerange cheap
_:search/6206700b type Restaurant
_:system canthelp _:search/4c01de0d
_:search/4c01de0d area north
_:search/4c01de0d food vietnamese
_:search/4c01de0d pricerange cheap
_:search/4c01de0d type Restaurant
_:search food vietnamese
_:system canthelp _:search/02e413cf
_:search/02e413cf area north
_:search/02e413cf food vietnamese
_:search/02e413cf pricerange cheap
_:search/02e413cf type Restaurant
_:search area centre
_:search type Restaurant
_:system greeted _:user
_:search pricerange cheap
_:result area east
_:result name the missing sock
_:result pricerange cheap
_:result type Restaurant
_:system inquired _:user
_:system canthelp _:search/f1b55fc8
_:search/f1b55fc8 area east
_:search/f1b55fc8 food vietnamese
_:search/f1b55fc8 pricerange cheap
_:search/f1b55fc8 type Restaurant
_:system canthelp _:search/3dede5aa
_:search/3dede5aa area north
_:search/3dede5aa food vietnamese
_:search/3dede5aa pricerange cheap
_:search/3dede5aa type Restaurant
_:system canthelp _:search/6206700b
_:search/6206700b area north
_:search/6206700b food vietnamese
_:search/6206700b pricerange cheap
_:search/6206700b type Restaurant
_:system canthelp _:search/4c01de0d
_:search/4c01de0d area north
_:search/4c01de0d food vietnamese
_:search/4c01de0d pricerange cheap
_:search/4c01de0d type Restaurant
_:search food vietnamese
_:system canthelp _:search/02e413cf
_:search/02e413cf area north
_:search/02e413cf food vietnamese
_:search/02e413cf pricerange cheap
_:search/02e413cf type Restaurant
_:system canthelp _:search/31da3668
_:search/31da3668 area centre
_:search/31da3668 food vietnamese
_:search/31da3668 pricerange cheap
_:search/31da3668 type Restaurant
_:search area east
_:search type Restaurant
_:system greeted _:user
_:search pricerange cheap
_:result area east
_:result name the missing sock
_:result pricerange cheap
_:result type Restaurant
_:system inquired _:user
_:system canthelp _:search/f1b55fc8
_:search/f1b55fc8 area east
_:search/f1b55fc8 food vietnamese
_:search/f1b55fc8 pricerange cheap
_:search/f1b55fc8 type Restaurant
_:system canthelp _:search/3dede5aa
_:search/3dede5aa area north
_:search/3dede5aa food vietnamese
_:search/3dede5aa pricerange cheap
_:search/3dede5aa type Restaurant
_:system canthelp _:search/6206700b
_:search/6206700b area north
_:search/6206700b food vietnamese
_:search/6206700b pricerange cheap
_:search/6206700b type Restaurant
_:system canthelp _:search/4c01de0d
_:search/4c01de0d area north
_:search/4c01de0d food vietnamese
_:search/4c01de0d pricerange cheap
_:search/4c01de0d type Restaurant
_:search food vietnamese
_:system canthelp _:search/02e413cf
_:search/02e413cf area north
_:search/02e413cf food vietnamese
_:search/02e413cf pricerange cheap
_:search/02e413cf type Restaurant
_:system canthelp _:search/31da3668
_:search/31da3668 area centre
_:search/31da3668 food vietnamese
_:search/31da3668 pricerange cheap
_:search/31da3668 type Restaurant
_:system canthelp _:search/5817c28b
_:search/5817c28b area east
_:search/5817c28b food vietnamese
_:search/5817c28b pricerange cheap
_:search/5817c28b type Restaurant
_:search area south
_:search type Restaurant
_:system greeted _:user
_:search pricerange cheap
_:result area east
_:result name the missing sock
_:result pricerange cheap
_:result type Restaurant
_:system inquired _:user
_:system canthelp _:search/f1b55fc8
_:search/f1b55fc8 area east
_:search/f1b55fc8 food vietnamese
_:search/f1b55fc8 pricerange cheap
_:search/f1b55fc8 type Restaurant
_:system canthelp _:search/3dede5aa
_:search/3dede5aa area north
_:search/3dede5aa food vietnamese
_:search/3dede5aa pricerange cheap
_:search/3dede5aa type Restaurant
_:system canthelp _:search/6206700b
_:search/6206700b area north
_:search/6206700b food vietnamese
_:search/6206700b pricerange cheap
_:search/6206700b type Restaurant
_:system canthelp _:search/4c01de0d
_:search/4c01de0d area north
_:search/4c01de0d food vietnamese
_:search/4c01de0d pricerange cheap
_:search/4c01de0d type Restaurant
_:search food vietnamese
_:system canthelp _:search/02e413cf
_:search/02e413cf area north
_:search/02e413cf food vietnamese
_:search/02e413cf pricerange cheap
_:search/02e413cf type Restaurant
_:system canthelp _:search/31da3668
_:search/31da3668 area centre
_:search/31da3668 food vietnamese
_:search/31da3668 pricerange cheap
_:search/31da3668 type Restaurant
_:system canthelp _:search/5817c28b
_:search/5817c28b area east
_:search/5817c28b food vietnamese
_:search/5817c28b pricerange cheap
_:search/5817c28b type Restaurant
_:system canthelp _:search/30748663
_:search/30748663 area east
_:search/30748663 food vietnamese
_:search/30748663 pricerange cheap
_:search/30748663 type Restaurant
_:search area east
_:search type Restaurant
_:system greeted _:user
_:search pricerange cheap
_:result area east
_:result name the missing sock
_:result pricerange cheap
_:result type Restaurant
_:system inquired _:user
_:system canthelp _:search/f1b55fc8
_:search/f1b55fc8 area east
_:search/f1b55fc8 food vietnamese
_:search/f1b55fc8 pricerange cheap
_:search/f1b55fc8 type Restaurant
_:system canthelp _:search/3dede5aa
_:search/3dede5aa area north
_:search/3dede5aa food vietnamese
_:search/3dede5aa pricerange cheap
_:search/3dede5aa type Restaurant
_:system canthelp _:search/6206700b
_:search/6206700b area north
_:search/6206700b food vietnamese
_:search/6206700b pricerange cheap
_:search/6206700b type Restaurant
_:system canthelp _:search/4c01de0d
_:search/4c01de0d area north
_:search/4c01de0d food vietnamese
_:search/4c01de0d pricerange cheap
_:search/4c01de0d type Restaurant
_:search food vietnamese
_:system canthelp _:search/02e413cf
_:search/02e413cf area north
_:search/02e413cf food vietnamese
_:search/02e413cf pricerange cheap
_:search/02e413cf type Restaurant
_:system canthelp _:search/31da3668
_:search/31da3668 area centre
_:search/31da3668 food vietnamese
_:search/31da3668 pricerange cheap
_:search/31da3668 type Restaurant
_:system canthelp _:search/5817c28b
_:search/5817c28b area east
_:search/5817c28b food vietnamese
_:search/5817c28b pricerange cheap
_:search/5817c28b type Restaurant
_:system canthelp _:search/30748663
_:search/30748663 area east
_:search/30748663 food vietnamese
_:search/30748663 pricerange cheap
_:search/30748663 type Restaurant
_:system canthelp _:search/daa9ba27
_:search/daa9ba27 area north
_:search/daa9ba27 food vietnamese
_:search/daa9ba27 pricerange cheap
_:search/daa9ba27 type Restaurant
_:search area west
_:search type Restaurant
_:system greeted _:user
_:search pricerange cheap
_:result area east
_:result name the missing sock
_:result pricerange cheap
_:result type Restaurant
_:system inquired _:user
_:system canthelp _:search/f1b55fc8
_:search/f1b55fc8 area east
_:search/f1b55fc8 food vietnamese
_:search/f1b55fc8 pricerange cheap
_:search/f1b55fc8 type Restaurant
_:system canthelp _:search/3dede5aa
_:search/3dede5aa area north
_:search/3dede5aa food vietnamese
_:search/3dede5aa pricerange cheap
_:search/3dede5aa type Restaurant
_:system canthelp _:search/6206700b
_:search/6206700b area north
_:search/6206700b food vietnamese
_:search/6206700b pricerange cheap
_:search/6206700b type Restaurant
_:system canthelp _:search/4c01de0d
_:search/4c01de0d area north
_:search/4c01de0d food vietnamese
_:search/4c01de0d pricerange cheap
_:search/4c01de0d type Restaurant
_:search food vietnamese
_:system canthelp _:search/02e413cf
_:search/02e413cf area north
_:search/02e413cf food vietnamese
_:search/02e413cf pricerange cheap
_:search/02e413cf type Restaurant
_:system canthelp _:search/31da3668
_:search/31da3668 area centre
_:search/31da3668 food vietnamese
_:search/31da3668 pricerange cheap
_:search/31da3668 type Restaurant
_:system canthelp _:search/5817c28b
_:search/5817c28b area east
_:search/5817c28b food vietnamese
_:search/5817c28b pricerange cheap
_:search/5817c28b type Restaurant
_:system canthelp _:search/30748663
_:search/30748663 area east
_:search/30748663 food vietnamese
_:search/30748663 pricerange cheap
_:search/30748663 type Restaurant
_:system canthelp _:search/daa9ba27
_:search/daa9ba27 area north
_:search/daa9ba27 food vietnamese
_:search/daa9ba27 pricerange cheap
_:search/daa9ba27 type Restaurant
_:system canthelp _:search/f933b440
_:search/f933b440 area north
_:search/f933b440 food vietnamese
_:search/f933b440 pricerange cheap
_:search/f933b440 type Restaurant
_:search area centre
_:search type Restaurant
_:system greeted _:user
_:result area east
_:result name the missing sock
_:result pricerange cheap
_:result type Restaurant
_:system inquired _:user
_:system canthelp _:search/f1b55fc8
_:search/f1b55fc8 area east
_:search/f1b55fc8 food vietnamese
_:search/f1b55fc8 pricerange cheap
_:search/f1b55fc8 type Restaurant
_:system canthelp _:search/3dede5aa
_:search/3dede5aa area north
_:search/3dede5aa food vietnamese
_:search/3dede5aa pricerange cheap
_:search/3dede5aa type Restaurant
_:system canthelp _:search/6206700b
_:search/6206700b area north
_:search/6206700b food vietnamese
_:search/6206700b pricerange cheap
_:search/6206700b type Restaurant
_:system canthelp _:search/4c01de0d
_:search/4c01de0d area north
_:search/4c01de0d food vietnamese
_:search/4c01de0d pricerange cheap
_:search/4c01de0d type Restaurant
_:search food vietnamese
_:system canthelp _:search/02e413cf
_:search/02e413cf area north
_:search/02e413cf food vietnamese
_:search/02e413cf pricerange cheap
_:search/02e413cf type Restaurant
_:system canthelp _:search/31da3668
_:search/31da3668 area centre
_:search/31da3668 food vietnamese
_:search/31da3668 pricerange cheap
_:search/31da3668 type Restaurant
_:system canthelp _:search/5817c28b
_:search/5817c28b area east
_:search/5817c28b food vietnamese
_:search/5817c28b pricerange cheap
_:search/5817c28b type Restaurant
_:system canthelp _:search/30748663
_:search/30748663 area east
_:search/30748663 food vietnamese
_:search/30748663 pricerange cheap
_:search/30748663 type Restaurant
_:system canthelp _:search/daa9ba27
_:search/daa9ba27 area north
_:search/daa9ba27 food vietnamese
_:search/daa9ba27 pricerange cheap
_:search/daa9ba27 type Restaurant
_:system canthelp _:search/f933b440
_:search/f933b440 area north
_:search/f933b440 food vietnamese
_:search/f933b440 pricerange cheap
_:search/f933b440 type Restaurant
_:search area centre
_:system canthelp _:search/cd02077b
_:search/cd02077b area centre
_:search/cd02077b food vietnamese
_:search/cd02077b pricerange cheap
_:search/cd02077b type Restaurant
_:search pricerange moderate
_:search type Restaurant
_:system greeted _:user
_:result area east
_:result name the missing sock
_:result pricerange cheap
_:result type Restaurant
_:system inquired _:user
_:system canthelp _:search/f1b55fc8
_:search/f1b55fc8 area east
_:search/f1b55fc8 food vietnamese
_:search/f1b55fc8 pricerange cheap
_:search/f1b55fc8 type Restaurant
_:system canthelp _:search/3dede5aa
_:search/3dede5aa area north
_:search/3dede5aa food vietnamese
_:search/3dede5aa pricerange cheap
_:search/3dede5aa type Restaurant
_:system canthelp _:search/6206700b
_:search/6206700b area north
_:search/6206700b food vietnamese
_:search/6206700b pricerange cheap
_:search/6206700b type Restaurant
_:system canthelp _:search/4c01de0d
_:search/4c01de0d area north
_:search/4c01de0d food vietnamese
_:search/4c01de0d pricerange cheap
_:search/4c01de0d type Restaurant
_:search food vietnamese
_:system canthelp _:search/02e413cf
_:search/02e413cf area north
_:search/02e413cf food vietnamese
_:search/02e413cf pricerange cheap
_:search/02e413cf type Restaurant
_:system canthelp _:search/31da3668
_:search/31da3668 area centre
_:search/31da3668 food vietnamese
_:search/31da3668 pricerange cheap
_:search/31da3668 type Restaurant
_:system canthelp _:search/5817c28b
_:search/5817c28b area east
_:search/5817c28b food vietnamese
_:search/5817c28b pricerange cheap
_:search/5817c28b type Restaurant
_:system canthelp _:search/30748663
_:search/30748663 area east
_:search/30748663 food vietnamese
_:search/30748663 pricerange cheap
_:search/30748663 type Restaurant
_:system canthelp _:search/daa9ba27
_:search/daa9ba27 area north
_:search/daa9ba27 food vietnamese
_:search/daa9ba27 pricerange cheap
_:search/daa9ba27 type Restaurant
_:system canthelp _:search/f933b440
_:search/f933b440 area north
_:search/f933b440 food vietnamese
_:search/f933b440 pricerange cheap
_:search/f933b440 type Restaurant
_:system canthelp _:search/cd02077b
_:search/cd02077b area centre
_:search/cd02077b food vietnamese
_:search/cd02077b pricerange cheap
_:search/cd02077b type Restaurant
_:search pricerange moderate
_:system canthelp _:search/cc652941
_:search/cc652941 area centre
_:search/cc652941 food vietnamese
_:search/cc652941 pricerange moderate
_:search/cc652941 type Restaurant
_:search area north
_:search type Restaurant
_:system greeted _:user
_:result area east
_:result name the missing sock
_:result pricerange cheap
_:result type Restaurant
_:system inquired _:user
_:system canthelp _:search/f1b55fc8
_:search/f1b55fc8 area east
_:search/f1b55fc8 food vietnamese
_:search/f1b55fc8 pricerange cheap
_:search/f1b55fc8 type Restaurant
_:system canthelp _:search/3dede5aa
_:search/3dede5aa area north
_:search/3dede5aa food vietnamese
_:search/3dede5aa pricerange cheap
_:search/3dede5aa type Restaurant
_:system canthelp _:search/6206700b
_:search/6206700b area north
_:search/6206700b food vietnamese
_:search/6206700b pricerange cheap
_:search/6206700b type Restaurant
_:system canthelp _:search/4c01de0d
_:search/4c01de0d area north
_:search/4c01de0d food vietnamese
_:search/4c01de0d pricerange cheap
_:search/4c01de0d type Restaurant
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_:system greeted _:user
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_:user thanked _:system
_:user dismissed _:system