U: I am looking for a restaurant serving Persian food in the expensive price range.

S: I'm sorry, there aren't any expensive Persian restaurants. Would you like me to check for a different type of food?

U: How about any restaurant in the centre?

S: There are 33 expensive restaurants in the center of town. Which cuisine type would you prefer?

U: I think I'd like to try Indian food, are there any of those in the center of town?

S: There are 6 restaurants that fit your request. Curry Garden, The Golden Curry, Saffron Brasserie, Panahar, Curry King, and Curry Queen.

U: Does it have a lot of non-alcoholic drink options?
S: Saffron Brasserie, Curry King and Curry Queen seemed to have the best reviews for the variety of non-alcoholic drink options.  They seem more limited at Curry Garden, and people are mixed in their feelings of the non-alcoholic drink variety at The golden Curry and Panahar.