inform((_:search,area,'east');(_:search,type,'Restaurant'))
user
Where'a a restaurant on the east part f town ?
request((_:search,food,?);(_:search,type,'Restaurant'))
system
What type of food would you like ?
inform((_:search,food,'dontcare');(_:search,type,'Restaurant'))
user
it does n't matter
inform((_:result,area,'centre');(_:result,name,'the royal standard');(_:result,type,'Restaurant'))
system
the royal standard is located in city centre
inform((_:search,area,'east');(_:search,type,'Restaurant'))
user
Are there any restaurants located not in the city centre but in the east part of town ?
system
There are a few restaurants in the east part of town . Are you looking for a certain price range ?
_:search area east
_:search type Restaurant
_:search area east
_:search food dontcare
_:search type Restaurant
_:search food dontcare
_:result area centre
_:result name the royal standard
_:result type Restaurant
_:search area east
_:search type Restaurant