inform((_:search,category,'hotel');(_:search,has_parking,'yes');(_:search,stars,'4');(_:search,type,'Hotel'))
user
I would like to find a hotel that has 4 stars and included free parking
inform((_:result,area,'centre');(_:result,area,'west');(_:result,count,'3');(_:result,type,'Hotel'))
system
I have 3 hotels that meet your criteria , 2 are in the west and one is in the centre . Do you have a preference ?
inform((_:search,has_parking,'yes');(_:search,stars,'4');(_:search,type,'Hotel'))
user
The hotel should have a star of 4 and should include free parking .
offer((_:booking,type,'Booking')) inform((_:result,has_parking,'none');(_:result,name,'University Arms hotel');(_:result,stars,'4');(_:result,type,'Hotel'))
system
University Arms hotel has 4 starts and free parking . Would you like me to book it for you ?
inform((_:search,day,'saturday');(_:search,people,'8');(_:search,stay,'2');(_:search,type,'Hotel'))
user
yes , please . 8 people for 2 nights starting on saturday .
inform((_:booking,ref,'1VQQLH6R');(_:booking,type,'Booking'))
system
Booking was successful . 
 Reference number is : 1VQQLH6R
thank()
user
Thank you that is all I needed .
system
Great ! Have a nice day !
_:search category hotel
_:search has_parking yes
_:search stars 4
_:search type Hotel
_:search category hotel
_:result area centre
_:result area west
_:result count 3
_:result type Hotel
_:search has_parking yes
_:search stars 4
_:search type Hotel
_:search category hotel
_:result area centre
_:result area west
_:result count 3
_:search has_parking yes
_:search stars 4
_:system offered _:booking
_:booking type Booking
_:result has_parking none
_:result name University Arms hotel
_:result stars 4
_:result type Hotel
_:search day saturday
_:search people 8
_:search stay 2
_:search type Hotel
_:search category hotel
_:result area centre
_:result area west
_:result count 3
_:search has_parking yes
_:search stars 4
_:system offered _:booking
_:result has_parking none
_:result name University Arms hotel
_:result stars 4
_:result type Hotel
_:search day saturday
_:search people 8
_:search stay 2
_:search type Hotel
_:booking ref 1VQQLH6R
_:booking type Booking