inform((_:search,category,'college');(_:search,type,'Attraction'))
user
I 'm looking to visit a college .
request((_:search,area,?);(_:search,type,'Attraction')) inform((_:result,category,'college');(_:result,type,'Attraction'))
system
What area would you like to visit a college ?
inform((_:search,area,'dontcare');(_:search,type,'Attraction'))
user
It can be anywhere in town .
inform((_:result,area,'centre');(_:result,name,"Christ 's college");(_:result,type,'Attraction')) reqmore() inform((_:result,amount,'many');(_:result,category,'colleges');(_:result,type,'Attraction'))
system
There are many beautiful colleges to see I recommend Christ 's college in the centre . Would you like more information ?
request((_:result,address,?);(_:result,area,?);(_:result,type,'Attraction'))
user
Yes . May I have the address and the area it is in .
reqmore() inform((_:result,address,"saint andrew 's street");(_:result,area,'centre');(_:result,name,"christ 's college");(_:result,type,'Attraction'))
system
The address for christ 's college is saint andrew 's street in the centre . May I help you with something else today ?
inform((_:search,food,'chinese');(_:search,pricerange,'expensive');(_:search,type,'Restaurant'))
user
Yes I want to find an expensive chinese restaurant .
inform((_:result,area,'centre');(_:result,count,'9');(_:result,name,'ugly duckling');(_:result,type,'Restaurant')) reqmore() inform((_:result,category,'college');(_:result,type,'Attraction'))
system
There are 9 options , but ugly duckling fits your needs and is in the centre near the college , would you like more information ?
inform((_:search,day,'sunday');(_:search,duration,'13:00');(_:search,people,'7');(_:search,type,'Restaurant'))
user
Could you book that place for 7 people on Sunday at 13:00 ?
system
Booking was successful . The table will be reserved for 15 minutes . 
 Reference number is : BC3DZBXM
_:search category college
_:search type Attraction
_:search category college
_:result category college
_:result type Attraction
_:search area dontcare
_:search type Attraction
_:search category college
_:search area dontcare
_:search type Attraction
_:result area centre
_:result name Christ 's college
_:system inquired _:user
_:result amount many
_:result category colleges
_:result type Attraction
_:result address ?
_:result area ?
_:search category college
_:search area dontcare
_:result amount many
_:result category colleges
_:system inquired _:user
_:result address saint andrew 's street
_:result area centre
_:result name christ 's college
_:result type Attraction
_:search food chinese
_:search pricerange expensive
_:search type Restaurant
_:search category college
_:search area dontcare
_:result amount many
_:result address saint andrew 's street
_:search food chinese
_:search pricerange expensive
_:result area centre
_:result count 9
_:result name ugly duckling
_:system inquired _:user
_:result category college
_:result type Attraction
_:search day sunday
_:search duration 13:00
_:search people 7
_:search type Restaurant