Am looking for a train,it should go to stansted airport and should leave after 13:30
I'd love to help. Where are you departing from?
The train should depart from cambridge and should leave on friday.
How does train TR1090 that leaves at 13:40 sound?
That sounds like an excellent choice! Thank you for the help!
welcome. at your service next time
Can you make a booking for me?
Your train leaving at 13:40 from Cambridge going to Stansted airport has been booked.  Your reference number is 39OY8NLR. The total fee is 10.1 GBP payable at the station. 
I just need to verify that that booking is for 4 people. If not, can you change it?
I have you for for, reference is X06J64WK. What else may I do?
I think we have taken care of everything. Thank you so much for your time!
You're very welcome, have a great day!