U: I am looking for a restaurant in Cambridge that serves south indian food.

S: I am sorry there are no restaurants in the are that match that description.

U: What kind of moderately-priced restaurants are there in the center of town, then?

S: We've got 21 moderately-priced restaurants in the centre. There are Asian Oriental, British, Chinese, European, Gastropub, International, Italian, Lebanese, Modern European, Spanish, and Turkish options. Do any of those interest you?

U: Good. I would like to try Asian Oriental then.

S: The Yippee noodle bar meets your criteria. Would you like me to book that for you?

U: Does the Yippee have spring rolls at reasonable prices. I don't want to spend too much on them.
S: The Yippee Noodle Bar is a little out of your price range. They have Spring Rolls that are very good.