U: I'm looking for a restaurant that serves gastropub.

S: There are four gastropubs in Cambridge. Is there a price range you prefer?

U: Expensive. And in the centre, if you can.

S: I have the Backstreet Bistro or The Slug and Lettuce. Would you like me to book a reservation at one for you?

U: Which of the two has live music?

S: Backstreet Bistro does not have live music Which restaurant Would you prefer?

U: Could you book a table at the Backstreet Bistro on Friday? 18:45 for 4 people, please.

S: I'm sorry, Backstreet Bistro does not have availability at this time.  Would you like to book another day or time for your reservation?

U: Does the restaurant have outdoor seating?
S: Yes, the Backstreet Bistro does have an outdoor seating area for guests that overlooks a beautiful lake.