I need a train to stansted airport. I'd like to arrive by at least 21:45
I can help you with that. What day would you like to travel on? Where will you be departing from?
I will be leaving Cambridge on Monday.
The TR4015 will get you in at 21:08. Will that work for you? Or would you like to get in a little sooner?
No thats fine and that will be all thank you 
If there is nothing else I can do for you, have a great day and thank you.
Actually, could you just give me some information on sesame restaurant and bar?
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?
Just their address and phone number please.
The address is 17 Hills Road City Centre and the postcode is cb21nw.  Is there any other informaton I can help you with?