hello()
system
hello , welcome to the parlance dialogue system ? you can ask for restaurant -s by area , price range or food type . how may i help you ?
ack()
user
good what's welsh
request((_:search,pricerange,?);(_:search,type,'Restaurant'))
system
would you like something in the cheap , moderate , or expensive price range ?
inform((_:search,pricerange,'cheap');(_:search,type,'Restaurant'))
user
cheap restaurant
inform((_:result,name,'u lee restaurant');(_:result,pricerange,'cheap');(_:result,type,'Restaurant'))
system
u lee restaurant is a nice place it is in the cheap price range .
user
_:system greeted _:user
_:system greeted _:user
_:search pricerange cheap
_:search type Restaurant
_:system greeted _:user
_:search pricerange cheap
_:search type Restaurant
_:result name u lee restaurant
_:result pricerange cheap
_:result type Restaurant