U: i want some mexican food.

S: The only listing for Mexican food is Chiquito Restaurant Bar. How else may I assist you?

U: I want a restaurant in the centre and serves asian oriental food? What is the phone number?

S: We have four Asian oriental restaurants in centre.  What price range do you prefer?

U: I don't care.

S: Dojo Noodle Bar serves asian oriental food and is located in the centre of town.  The price range is cheap.

U: Do you know if they serve Hot Pot....high quality Hot Pot?
S: The ratings for Dojo are very positive with customers saying things like good food, made well, and generous portions. Would you like to give it a shot?