inform((_:search,has_parking,'dontcare');(_:search,pricerange,'moderate');(_:search,type,'Hotel'))
user
I am looking for a place to stay . The hotel does n't need to have free parking and should be in the moderate price range
request((_:search,area,?);(_:search,type,'Hotel'))
system
Alright . what area do you want to stay in ?
inform((_:search,area,'east');(_:search,type,'Hotel'))
user
I would like to stay in the east .
inform((_:result,count,'3');(_:result,name,'Warkworth House');(_:result,type,'Hotel'))
system
There are three locations which fit your needs , sir . The Warkworth House is an excellent choice .
inform((_:search,day,'tuesday');(_:search,people,'2');(_:search,stay,'4');(_:search,type,'Hotel'))
user
Okay , I want to book it for 2 people and 4 nights starting from Tuesday .
canthelp((_:booking,type,'Booking')) request((_:booking,day,?);(_:booking,duration,?);(_:booking,type,'Booking'))
system
Unfortunately , the hotel could n't accommodate you . would you like to change the day or time ?
inform((_:search,day,'friday');(_:search,type,'Hotel'))
user
What about on Friday ?
inform((_:booking,ref,'49R7ARU6');(_:booking,type,'Booking'))
system
Booking was successful . 
 Reference number is : 49R7ARU6 .
thank()
user
Great , thanks so much !
system
Thank you goodbye
_:search has_parking dontcare
_:search pricerange moderate
_:search type Hotel
_:search has_parking dontcare
_:search pricerange moderate
_:search area east
_:search type Hotel
_:search has_parking dontcare
_:search pricerange moderate
_:search area east
_:result count 3
_:result name Warkworth House
_:result type Hotel
_:search day tuesday
_:search people 2
_:search stay 4
_:search type Hotel
_:search has_parking dontcare
_:search pricerange moderate
_:search area east
_:result count 3
_:result name Warkworth House
_:result type Hotel
_:search people 2
_:search stay 4
_:system canthelp _:booking/1111b484
_:booking/1111b484 type Booking
_:booking day ?
_:booking duration ?
_:booking type Booking
_:search day friday
_:search type Hotel
_:search has_parking dontcare
_:search pricerange moderate
_:search area east
_:result count 3
_:result name Warkworth House
_:result type Hotel
_:search people 2
_:search stay 4
_:system canthelp _:booking/1111b484
_:booking/1111b484 type Booking
_:booking day ?
_:booking duration ?
_:search day friday
_:search type Hotel
_:booking ref 49R7ARU6
_:booking type Booking