inform((_:search,area,'north');(_:search,pricerange,'cheap');(_:search,type,'Restaurant'))
user
I would like to find a cheap restaurant . It should be in the North side of town .
request((_:search,food,?);(_:search,type,'Restaurant'))
system
what type of food do you want ?
inform((_:search,food,'dontcare');(_:search,type,'Restaurant'))
user
No preference for food type , thank you .
inform((_:result,area,'north');(_:result,name,'Da vinci pizzeria');(_:result,name,'Royal Spice');(_:result,pricerange,'cheap');(_:result,type,'Restaurant')) thank()
system
Great ! Da vinci pizzeria and Royal Spice are both cheap and located in the north part of town .
inform((_:search,area,'north');(_:search,name,'Da vinci pizzeria');(_:search,name,'Royal Spice');(_:search,pricerange,'cheap');(_:search,type,'Restaurant'))
user
Great ! Da vinci pizzeria and Royal Spice are both cheap and located in the north part of town .
select((_:result,name,'Da vinci pizzeria');(_:result,name,'Royal Spice');(_:result,type,'Restaurant'))
system
Which one do you prefer ? Da vinci pizzeria or Royal Spice ?
inform((_:search,name,'royal spice');(_:search,type,'Restaurant')) request((_:result,address,?);(_:result,type,'Restaurant'))
user
Royal Spice , give me their address please .
inform((_:result,address,'Victoria Avenue Chesterton');(_:result,type,'Restaurant'))
system
It 's Victoria Avenue Chesterton .   Would you like the phone number ?
thank()
user
No , thank you .   Goodbye !
system
Thank you and goodbye !
_:search area north
_:search pricerange cheap
_:search type Restaurant
_:search area north
_:search pricerange cheap
_:search food dontcare
_:search type Restaurant
_:search food dontcare
_:result area north
_:result name Da vinci pizzeria
_:result name Royal Spice
_:result pricerange cheap
_:result type Restaurant
_:search area north
_:search name Da vinci pizzeria
_:search name Royal Spice
_:search pricerange cheap
_:search type Restaurant
_:search food dontcare
_:result area north
_:result pricerange cheap
_:search area north
_:search pricerange cheap
_:result name Da vinci pizzeria
_:result name Royal Spice
_:result type Restaurant
_:search name royal spice
_:search type Restaurant
_:result address ?
_:search food dontcare
_:result area north
_:result pricerange cheap
_:search area north
_:search pricerange cheap
_:result name Da vinci pizzeria
_:result name Royal Spice
_:search name royal spice
_:search type Restaurant
_:result address Victoria Avenue Chesterton
_:result type Restaurant