I am looking for a train for three people from the stansted airport to arrive by 12:45. I need to leave on Thursday and go to Cambridge.
What time would you like to leave by?
I don't care when I leave I just want to arrive by 12:45
There is one that leaves at 11:24 on Thursday. Would you like me to book that for you?
Yes, that would work. I need 3 tickets please.
Your 3 tickets are booked, the reference number is C3VMMP9M and the total fee of 30.29 GBP is payable at the station.
Thank you so much, that is it for today.
Glad I could help. Hope you have a great day. 
You as well. Goodbye.
Good bye and enjoy your visit.