U: I need the name and phone number for a cantonese restaurant on the west side of town.

S: Do you have any preference regarding price range?

U: No.

S: There are no Cantonese restaurants located in West. Are you interested in another type of cuisine?

U: Vietnamese sounds good.

S: Thanh Binh is in the west part of town. Would you like the phone number?

U: Is it in a vibrant neighborhood?
S: I'm not sure if it is vibrant, but the location is supposedly lovely and right in the middle of the city.  They also have easy parking.