U: I need a train to stansted airport. I'd like to arrive by at least 21:45

S: I can help you with that. What day would you like to travel on? Where will you be departing from?

U: I will be leaving Cambridge on Monday.

S: The TR4015 will get you in at 21:08. Will that work for you? Or would you like to get in a little sooner?

U: No thats fine and that will be all thank you

S: If there is nothing else I can do for you, have a great day and thank you.

U: Actually, could you just give me some information on sesame restaurant and bar?

S: Yes, sesame restaurant and bar serves chinese food and is in the expensive range.  They are located in the centre.  Do you have any other questions about them?

U: Do they serve large portions?
S: Some of the reviews stated that the portions were large.  However more reviews stated that the portions were very small.