U: I am looking for a brazliian restaurant in the centre.

S: Sorry, I couldn't find any food of that type.

U: There are no Brazilian restaurants anywhere in Cambridge?

S: No, their are not any. Would you like to pick a different type of food?

U: Yes, what about british food please.

S: what price range are you comfortable with?

U: Something in the moderate price range would be good.

S: Do you have a preference as to what area of town you dine in?

U: Yes, the centre is preferable.

S: How about The Copper Kettle?  It's located in the centre and moderate price range.

U: Does the restaurant have a nice view to look at?
S: The Copper Kettle appears to have a nice view from their patio. Would you like to make a reservation to eat there?