inform((_:search,area,'centre');(_:search,category,'theaters');(_:search,type,'Attraction'))
user
What theaters are in the Cambridge centre ?
inform((_:result,name,'mumford theatre');(_:result,name,'the adc theatre');(_:result,name,'the cambridge arts theatre');(_:result,name,'the cambridge corn exhange');(_:result,name,'the junction');(_:result,type,'Attraction'))
system
We have the cambridge arts theatre , the adc theatre , mumford theatre , the cambridge corn exhange , and the junction .
inform((_:search,name,'mumford theatre');(_:search,type,'Attraction')) request((_:result,address,?);(_:result,entrance_fee,?);(_:result,type,'Attraction'))
user
Ok , can I get the address and entrance fee for the Mumford Theatre ?
inform((_:result,entrance_fee,'The entrance fee is not listed');(_:result,type,'Attraction'))
system
The entrance fee is not listed would you like the phone number or address ?
inform((_:search,name,'ugly duckling');(_:search,type,'Restaurant'))
user
Yes please . I would like that very much and I also would like information on the Ugly Duckling restaurant .
system
Ugly duckling is an expensive chinese restaurant and very good too .   Address 12 St. Johns Street in city centre .   Would you like me to make reservations for you ?
_:search area centre
_:search category theaters
_:search type Attraction
_:search area centre
_:search category theaters
_:result name mumford theatre
_:result name the adc theatre
_:result name the cambridge arts theatre
_:result name the cambridge corn exhange
_:result name the junction
_:result type Attraction
_:search name mumford theatre
_:search type Attraction
_:result address ?
_:result entrance_fee ?
_:search area centre
_:search category theaters
_:result name mumford theatre
_:result name the adc theatre
_:result name the cambridge arts theatre
_:result name the cambridge corn exhange
_:result name the junction
_:result address ?
_:result entrance_fee The entrance fee is not listed
_:result type Attraction
_:search name ugly duckling
_:search type Restaurant