inform((_:search,food,'spanish');(_:search,type,'Restaurant'))
user
I 'm looking for a restaurant that serves spanish food
inform((_:result,area,'centre');(_:result,food,'Spanish');(_:result,name,'La Raza');(_:result,pricerange,'cheap');(_:result,type,'Restaurant'))
system
La Raza is a Spanish restaurant , it is in the cheap price range , and it is located in the centre part of town . Would you like the phone number ?
request((_:result,address,?);(_:result,type,'Restaurant'))
user
What is the address ?
inform((_:result,address,'4 - 6 Rose Crescent');(_:result,name,'La Raza');(_:result,type,'Restaurant'))
system
The address for La Raza is 4 - 6 Rose Crescent .   Would you like their phone number ?
thank()
user
no , thank you
system
Thank you for using our system . Good bye
_:search food spanish
_:search type Restaurant
_:search food spanish
_:search type Restaurant
_:result area centre
_:result food Spanish
_:result name La Raza
_:result pricerange cheap
_:result type Restaurant
_:result address ?
_:search food spanish
_:search type Restaurant
_:result area centre
_:result food Spanish
_:result pricerange cheap
_:result address 4 - 6 Rose Crescent
_:result name La Raza
_:result type Restaurant