inform((_:search,area,'north');(_:search,has_parking,'dontcare');(_:search,type,'Hotel'))
user
I 'm looking for a place to stay . It needs to be in the north but it does n't have to have free parking .
request((_:search,pricerange,?);(_:search,type,'Hotel'))
system
What is your price range ?
inform((_:search,area,'north');(_:search,pricerange,'cheap');(_:search,stars,'4');(_:search,type,'Hotel'))
user
I am looking for a cheap 4 star hotel on the north .
inform((_:result,area,'North');(_:result,category,'guesthouse');(_:result,name,'Worth house');(_:result,pricerange,'cheap');(_:result,type,'Hotel'))
system
Worth house is a cheap guesthouse in the North . Will that do ?
inform((_:search,pricerange,'moderate');(_:search,type,'Hotel'))
user
Yes . Is there on in the moderate price range as well ? To compare .
offer((_:booking,type,'Booking')) inform((_:result,area,'north');(_:result,category,'guesthouses');(_:result,count,'7');(_:result,pricerange,'moderately priced');(_:result,stars,'4');(_:result,type,'Hotel'))
system
Sure thing ! There are seven 4 star moderately priced guesthouses in the north . maybe you would like to book on of these
inform((_:search,day,'thursday');(_:search,people,'8');(_:search,stay,'3');(_:search,type,'Hotel'))
user
Can you pick your favorite and book a room for me ? There will be 8 people , and we 'll arrive on Thursday and spend 3 nights .
inform((_:booking,ref,'RI83HXK1');(_:booking,type,'Booking'))
system
Booking was successful . 
 Reference number is : RI83HXK1 . do you need information about the hotel ?
inform((_:search,day,'friday');(_:search,destination,'london liverpool street');(_:search,type,'Train'))
user
No , but I need to find a train . I 'm looking to travel on Friday to London Liverpool Street . Can you help ?
system
No thanks a lot it is enough
_:search area north
_:search has_parking dontcare
_:search type Hotel
_:search has_parking dontcare
_:search area north
_:search pricerange cheap
_:search stars 4
_:search type Hotel
_:search has_parking dontcare
_:search area north
_:search stars 4
_:result area North
_:result category guesthouse
_:result name Worth house
_:result pricerange cheap
_:result type Hotel
_:search pricerange moderate
_:search type Hotel
_:search has_parking dontcare
_:search area north
_:search stars 4
_:result name Worth house
_:search pricerange moderate
_:system offered _:booking
_:booking type Booking
_:result area north
_:result category guesthouses
_:result count 7
_:result pricerange moderately priced
_:result stars 4
_:result type Hotel
_:search day thursday
_:search people 8
_:search stay 3
_:search type Hotel
_:search has_parking dontcare
_:search area north
_:search stars 4
_:result name Worth house
_:search pricerange moderate
_:system offered _:booking
_:result area north
_:result category guesthouses
_:result count 7
_:result pricerange moderately priced
_:result stars 4
_:result type Hotel
_:search people 8
_:search stay 3
_:booking ref RI83HXK1
_:booking type Booking
_:search day friday
_:search destination london liverpool street
_:search type Train