U: I want to find a place to eat that serves indian food in the centre of town.

S: There are 9 restaurants that fit that description. Are you looking for a cheap or expensive restaurant?

U: Price range doesn't matter. Which restaurant out of the 9 do you recommend?

S: I'd recoment the Mahal of Cambridge.  It's inexpensive, and conveniently located.  Would you like me to book you?

U: That sounds fine. Can you book for 4 people at 19:30 on sunday?

S: Booking was unsuccessful.   Would you like me to look at another location?

U: Yes. Can you find me something that is available in the same area and price range?

S: How about the ghandi?

U: Do you know if it has a good portion of foods?
S: The Ghandi is complimented frequently on their very generous portions of food. Would you like to know more about The Ghandi?