inform((_:search,area,'north');(_:search,type,'Restaurant'))
user
north part of town restaurant please
request((_:search,food,?);(_:search,type,'Restaurant'))
system
What type of food would you like ?
inform((_:search,food,'chinese');(_:search,type,'Restaurant'))
user
Chinese
request((_:search,pricerange,?);(_:search,type,'Restaurant'))
system
Do you have a certain price range you would like ?
inform((_:search,pricerange,'dontcare');(_:search,type,'Restaurant'))
user
I do n't care .
inform((_:result,amount,'several');(_:result,food,'chinese');(_:result,type,'Restaurant'))
system
There are several chinese restaurants .   Would you like their phone number ?
user
Yes , and I need one of their names please .
inform((_:result,area,'north');(_:result,food,'chinese');(_:result,name,'Hakka');(_:result,type,'Restaurant'))
system
Hakka is a chinese restaurant in the north part of town .
request((_:result,phone,?);(_:result,type,'Restaurant'))
user
Sound perfect ! What is their phone number ?
inform((_:result,name,'Hakka');(_:result,phone,'01223 568988');(_:result,type,'Restaurant')) reqmore()
system
Hakka 's phone number is 01223 568988 . Is there anything else I can do for you today ?
thank()
user
thank you , goodbye
system
Thank you for using the Cambridge restaurant system . Goodbye .
_:search area north
_:search type Restaurant
_:search area north
_:search food chinese
_:search type Restaurant
_:search area north
_:search food chinese
_:search pricerange dontcare
_:search type Restaurant
_:search area north
_:search food chinese
_:search pricerange dontcare
_:search type Restaurant
_:result amount several
_:result food chinese
_:result type Restaurant
_:search area north
_:search food chinese
_:search pricerange dontcare
_:search type Restaurant
_:result amount several
_:result area north
_:result food chinese
_:result name Hakka
_:result type Restaurant
_:result phone ?
_:search area north
_:search food chinese
_:search pricerange dontcare
_:search type Restaurant
_:result amount several
_:result area north
_:result food chinese
_:result name Hakka
_:result phone 01223 568988
_:result type Restaurant
_:system inquired _:user