inform((_:search,area,'center');(_:search,type,'Attraction'))
user
I need info on attractions in the center of the town .
request((_:search,category,?);(_:search,type,'Attraction'))
system
What type of attraction are you looking to attend ?
user
I 'm not sure .   Can you recommend one for me ?
inform((_:result,address,'trinity lane');(_:result,name,'old school architecture');(_:result,type,'Attraction'))
system
I recommend   old school architecture . it is   located in trinity lane . can i give you the address ?
inform((_:search,day,'wednesday');(_:search,departure,'cambridge');(_:search,type,'Train')) request((_:result,phone,?);(_:result,type,'Attraction'))
user
Yes I would like the ostcode and phone number as well . Can you find a me a train departing cambridge on wednesday ?
inform((_:result,address,'Trinity Lane');(_:result,name,'Old Schools');(_:result,phone,'01223332320');(_:result,postcode,'cb21tt');(_:result,type,'Attraction')) request((_:search,destination,?);(_:search,type,'Train'))
system
Old Schools , Trinity Lane , cb21tt .   The phone number is 01223332320 .   As for the train , which station will you be traveling to ?
inform((_:search,destination,'kings lynn');(_:search,type,'Train'))
user
I am going to Kings Lynn .
system
I will book it for you , is there anything else I can do for you ?
_:search area center
_:search type Attraction
_:search area center
_:search category ?
_:search type Attraction
_:search area center
_:search category ?
_:result address trinity lane
_:result name old school architecture
_:result type Attraction
_:search day wednesday
_:search departure cambridge
_:search type Train
_:result phone ?
_:search area center
_:search category ?
_:search day wednesday
_:search departure cambridge
_:result address Trinity Lane
_:result name Old Schools
_:result phone 01223332320
_:result postcode cb21tt
_:result type Attraction
_:search destination kings lynn
_:search type Train