U: I'm looking for a place to dine. The restaurant should be in the expensive price range and should be in the centre.

S: Do you have a preference on the type of food?

U: Yes.  I would like Greek food please.

S: I'm sorry there's no matches for greek food.

U: Okay, can you search for british food instead then?

S: There are 3 restaurants that meet that criteria. May I suggest fitzbillies restaurant?

U: Which restaurant has the best view?
S: Fitzbillies Restaurant is said to offer both good views and bad ones, according to customer reviews. Would you like to book it?