U: I would like a train going to stansted airport.

S: From where will you be departing?

U: I am departing cambridge tuesday

S: I have several trains available.  What is your preferred time of departure and arrival?

U: I would like to leave after 20:15.

S: I have one leaving at 20:40 and arriving by 21:08. Only 10.10 pounds. Would you like to book?

U: Thank you. can also provide the train ID?

S: TR8238. Would you like to book it?

U: No thanks can you help me find an expensive restaurant in the centre?

S: There are 33 expensive restaurants in the centre. Is there a type of food you prefer?

U: I'm up for an adventure, can you pick a good one for me?

S: Of course. I would recommend the Cambridge Chop House. It serves British food. Would you like to book a table?

U: Do they serve large portions of foods
S: Yes, Cambridge Chop House serves quite generous portions of great food. Can I help you with anything else?