inform((_:search,food,'italian');(_:search,pricerange,'expensive');(_:search,type,'Restaurant'))
user
I am looking for a place to dine . The restaurant should be in the expensive price range and should serve italian food
inform((_:result,area,'centre');(_:result,name,'caffe uno');(_:result,type,'Restaurant'))
system
I have the caffe uno in the centre of town . Would that work ?
inform((_:search,area,'south');(_:search,type,'Restaurant'))
user
No , I just realized I 'll be in the south area . Are there any that meet my criteria in the south ?
offer((_:booking,type,'Booking')) inform((_:result,area,'south');(_:result,name,'Frankie and Bennys');(_:result,type,'Restaurant'))
system
Yes , Frankie and Bennys is in the south and meets your criteria . Would you like me to make a reservation ?
inform((_:search,day,'sunday');(_:search,duration,'11:15');(_:search,people,'two');(_:search,type,'Restaurant'))
user
Yes could you book me a table for two Sunday at 11:15 ?
inform((_:booking,ref,'ZYQX1TYK');(_:booking,type,'Booking'))
system
Booking was successful . The table will be reserved for 15 minutes . 
 Reference number is : ZYQX1TYK .
thank()
user
Thank you so much for all of your help . Have a great day .
system
You are so welcome . Enjoy your meal .
_:search food italian
_:search pricerange expensive
_:search type Restaurant
_:search food italian
_:search pricerange expensive
_:result area centre
_:result name caffe uno
_:result type Restaurant
_:search area south
_:search type Restaurant
_:search food italian
_:search pricerange expensive
_:search area south
_:system offered _:booking
_:booking type Booking
_:result area south
_:result name Frankie and Bennys
_:result type Restaurant
_:search day sunday
_:search duration 11:15
_:search people two
_:search type Restaurant
_:search food italian
_:search pricerange expensive
_:search area south
_:system offered _:booking
_:result area south
_:result name Frankie and Bennys
_:result type Restaurant
_:search day sunday
_:search duration 11:15
_:search people two
_:search type Restaurant
_:booking ref ZYQX1TYK
_:booking type Booking