inform((_:search,area,'north');(_:search,pricerange,'cheap');(_:search,type,'Restaurant'))
user
I am looking for a cheap restaurant in the north part of town .
request((_:search,food,?);(_:search,type,'Restaurant'))
system
What kind of food are you looking for ?
inform((_:search,food,'dontcare');(_:search,type,'Restaurant'))
user
I do n't care .
inform((_:result,address,'20 Milton Road , Chesterton');(_:result,name,'Da Vinci Pizzeria');(_:result,type,'Restaurant'))
system
I would recommend the Da Vinci Pizzeria . They are located at 20 Milton Road , Chesterton .
request((_:result,phone,?);(_:result,type,'Restaurant'))
user
What is the phone number ?
reqmore() inform((_:result,name,"da vinci pizzeria 's");(_:result,phone,'01223 351707');(_:result,type,'Restaurant'))
system
da vinci pizzeria 's phone number is 01223 351707 .   Is there anything else I can help you with ?
request((_:result,address,?);(_:result,type,'Restaurant'))
user
What is the address ?
inform((_:result,address,'20 Milton Road Chesterton');(_:result,name,'Da Vinci Pizzeria');(_:result,type,'Restaurant'))
system
The address of Da Vinci Pizzeria is 20 Milton Road Chesterton .
request((_:result,food,?);(_:result,type,'Restaurant'))
user
What is the food type they serve ?
inform((_:result,food,'italian');(_:result,type,'Restaurant'))
system
They serve italian food .
thank()
user
Thank you !   Goodbye !
system
Thank you for using the Cambridge restaurant system . Goodbye .
_:search area north
_:search pricerange cheap
_:search type Restaurant
_:search area north
_:search pricerange cheap
_:search food dontcare
_:search type Restaurant
_:search area north
_:search pricerange cheap
_:search food dontcare
_:search type Restaurant
_:result address 20 Milton Road , Chesterton
_:result name Da Vinci Pizzeria
_:result type Restaurant
_:result phone ?
_:search area north
_:search pricerange cheap
_:search food dontcare
_:search type Restaurant
_:result address 20 Milton Road , Chesterton
_:system inquired _:user
_:result name da vinci pizzeria 's
_:result phone 01223 351707
_:result type Restaurant
_:result address ?
_:search area north
_:search pricerange cheap
_:search food dontcare
_:search type Restaurant
_:system inquired _:user
_:result phone 01223 351707
_:result address 20 Milton Road Chesterton
_:result name Da Vinci Pizzeria
_:result type Restaurant
_:result food ?
_:search area north
_:search pricerange cheap
_:search food dontcare
_:search type Restaurant
_:system inquired _:user
_:result phone 01223 351707
_:result address 20 Milton Road Chesterton
_:result name Da Vinci Pizzeria
_:result food italian
_:result type Restaurant