U: I am looking for a German restaurant in the expensive price range.

S: There are no restaurant that fit your description, do you want me to look for restaurant with moderate price range?

U: Did you try the center of town?

S: Yes, there are not any restaurants available.  Would you like to try a different price range?

U: How about an expensive Indian restaurant?

S: Yes, there are several expensive Indian restaurants in the centre area. Curry Garden and Saffron Brasserie and a few others. Should I book a table for you?

U: book a table for 2 people at 12:00 on thursday.

S: I have booked you at Curry Garden. They will hold the table for 15 minutes. Your reference number is 8TKID5N6. Do you need anything else?

U: Is their vindaloo of high quality?
S: The Vindaloo customers at Curry Garden rated the quality of the food as high. Would you like to give them a try?