inform((_:search,area,'north');(_:search,type,'Restaurant'))
user
I 'm looking for a restaurant in the north .
request((_:search,food,?);(_:search,pricerange,?);(_:search,type,'Restaurant'))
system
Absolutely ! What type of food are you looking to eat and is there a specific price range ?
inform((_:search,food,'light bites');(_:search,pricerange,'cheap');(_:search,type,'Restaurant'))
user
I want some light bites food , and cheap if possible .
request((_:search,food,?);(_:search,type,'Restaurant')) canthelp((_:search,type,'Restaurant'))
system
I have n't found anything . Is there another cuisine you 're interested in ?
inform((_:search,food,'italian');(_:search,type,'Restaurant'))
user
how about one that serves italian food
offer((_:booking,type,'Booking')) inform((_:result,name,'da vinci pizzeria');(_:result,type,'Restaurant'))
system
da vinci pizzeria is a good choice ! Would you like a reservation ?
inform((_:search,day,'thursday');(_:search,people,'2');(_:search,type,'Restaurant'))
user
Yes   I would like to book a table for 2 at 12;30 on Thursday please .
inform((_:booking,ref,'6BL860WY');(_:booking,type,'Booking'))
system
Your reservation has been made . The reference number is 6BL860WY .
thank()
user
great , thanks for your help .
system
Is the anything else I can help you with ?
_:search area north
_:search type Restaurant
_:search area north
_:search food light bites
_:search pricerange cheap
_:search type Restaurant
_:search area north
_:search pricerange cheap
_:system canthelp _:search/ee7f8523
_:search/ee7f8523 type Restaurant
_:search food italian
_:search type Restaurant
_:search area north
_:search pricerange cheap
_:system canthelp _:search/ee7f8523
_:search/ee7f8523 type Restaurant
_:search food italian
_:system offered _:booking
_:booking type Booking
_:result name da vinci pizzeria
_:result type Restaurant
_:search day thursday
_:search people 2
_:search type Restaurant
_:search area north
_:search pricerange cheap
_:system canthelp _:search/ee7f8523
_:search/ee7f8523 type Restaurant
_:search food italian
_:system offered _:booking
_:result name da vinci pizzeria
_:result type Restaurant
_:search day thursday
_:search people 2
_:search type Restaurant
_:booking ref 6BL860WY
_:booking type Booking