U: I am looking for a restaurant in the cheap price range that serves British food.

S: I am sorry there are no restaurants that meet those requirements. Would you like to try another type of food?

U: What British restaurants are available in the centre to choose from? I'd like to book a table at 17:15 for one on Saturday.

S: I can book a table for you at the oak bistro. They are moderately priced and you won't be disappointed

U: is there a nice outdoor dining area at the Oak Bistro?
S: Yes, the outdoor seating area has been described as being pleasant. Would you like to go ahead and book a reservation now?