hello()
user
Hi , I am planning a trip for my family and could use some help with a place to stay .
request((_:search,category,?);(_:search,type,'Hotel')) thank()
system
I can help with that , what would you like to stay at ?
inform((_:search,area,'west');(_:search,category,'hotel');(_:search,has_parking,'yes');(_:search,type,'Hotel'))
user
I would like a hotel on the west side of Cambridge . I prefer an affordable hotel that includes free parking .
select((_:result,pricerange,'cheaper');(_:result,pricerange,'expensive');(_:result,type,'Hotel')) inform((_:result,area,'west');(_:result,category,'hotels');(_:result,count,'2');(_:result,has_internet,'none');(_:result,has_parking,'none');(_:result,type,'Hotel'))
system
I have 2 hotels in the west . Both offer free internet and free parking . One is cheaper and the other is expensive . Do you have a preference ?
inform((_:search,pricerange,'cheap');(_:search,type,'Hotel'))
user
I want the cheap one .
inform((_:result,name,'Cambridge belfry');(_:result,pricerange,'cheap');(_:result,type,'Hotel'))
system
The cheap one is the Cambridge belfry .
inform((_:search,day,'friday');(_:search,people,'3');(_:search,stay,'3');(_:search,type,'Hotel'))
user
Please book that for 3 people for 3 nights starting on Friday .
system
Booking was successful . 
 Reference number is : IKC0PEFS .
_:user greeted _:system
_:user greeted _:system
_:search area west
_:search category hotel
_:search has_parking yes
_:search type Hotel
_:user greeted _:system
_:search area west
_:search category hotel
_:search has_parking yes
_:result pricerange cheaper
_:result pricerange expensive
_:result area west
_:result category hotels
_:result count 2
_:result has_internet none
_:result has_parking none
_:result type Hotel
_:search pricerange cheap
_:search type Hotel
_:user greeted _:system
_:search area west
_:search category hotel
_:search has_parking yes
_:result area west
_:result category hotels
_:result count 2
_:result has_internet none
_:result has_parking none
_:search pricerange cheap
_:result name Cambridge belfry
_:result pricerange cheap
_:result type Hotel
_:search day friday
_:search people 3
_:search stay 3
_:search type Hotel