U: See if you can find me a train from Cambridge to stansted airport please

S: I found you 133 of them! What day and time would you like to leave?

U: leaving cambridge, going to stansted airport on friday anytime after 18:30

S: We've narrowed your options to 6 trains. The earliest leaves at 18:40 and the latest at 23:40. A train leaves every hour. Can I book a ticket for you?

U: Yes, please book me a ticket on the 18:40 train. I will need to know how much the ticket costs and the train ID. Thanks!

S: OK, your ticket is booked. Your ticket cost is 10.10 pounds, and your train ID is TR8337.

U: Thank you. I am also looking to find a good chinese restaurant.

S: Okay what area and price range?

U: Moderately priced in the city centre.

S: There are three moderately priced chinese restaurants in the centre. Might I suggest shanghai family restaurant located on Burleigh Street?

U: Do they have ma po tofu that is a good value for the money?
S: Based on customer reviews of the Shanghai Family Restaurant, I can tell you that the ma po tofu is kind of expensive.