U: Hello, I am looking for a restaurant on the south side of town that serves christmas food.

S: I'm sorry, there aren't any restaurants serving Christmas food. Would you like something else instead?

U: how about chinese?

S: There are three results that serve chinese on the south area of town. do you have a price range preference?

U: I don't care about price.

S: Peking Restaurant is an expensive Chinese restaurant in the south part of town. Would you like their information?

U: They don't skimp on food portions, do they?
S: No, the food portions seem to be very generous. They've even been described as being enough for two people.