U: I am looking for a restaurant in the centre area in the cheap price range

S: There are 15 restaurants that fit your request. Do you know what type of food you will want to eat?

U: I don't care, just as long as it's cheap and in the center of town.

S: How about Charlie Chan?  It's a Chinese restaurant that is located in the centre and is cheap.

U: Does Charlie Chan serve high quality scrambled eggs and tomatoes?
S: I don't know if they serve scrambled eggs and tomatoes, but Many people say the food is really good, while many others also say it's average. Sorry I couldn't be more helpful.