inform((_:search,area,'centre');(_:search,type,'Attraction'))
user
Can you find me an attraction in the centre ?
request((_:search,category,?);(_:search,name,?);(_:search,type,'Attraction'))
system
Are you looking for a specific place ? Or do you prefer a particular type of attraction ?
request((_:result,address,?);(_:result,entrance_fee,?);(_:result,type,'Attraction'))
user
Not looking for anything specific . Maybe a college or museum if you can give me the address and entrance fee .
inform((_:result,address,'Jesus Lane');(_:result,category,'college');(_:result,entrance_fee,'free');(_:result,name,'Hughes Hall');(_:result,type,'Attraction'))
system
I would recommend Hughes Hall .   It is a college on Jesus Lane and the entrance is free .
thank()
user
Thank you goodbye
system
Thank you for using our service today .
_:search area centre
_:search type Attraction
_:search area centre
_:search category ?
_:search name ?
_:search type Attraction
_:result address ?
_:result entrance_fee ?
_:result type Attraction
_:search area centre
_:search category ?
_:search name ?
_:search type Attraction
_:result address Jesus Lane
_:result category college
_:result entrance_fee free
_:result name Hughes Hall
_:result type Attraction