Hello, I need to book a train for Thursday leaving to Peterborough.
No problem, can you please let me know where you want to depart from?
I would like to leave Cambridge after 09:15. 
TR7317 leaves at 10:06 on Thursday, would you like to reserve a seat?
Yes just one seat, and I'll need the reference number.
Booking was successful, the total fee is 16.5 GBP payable at the station.  Reference number is : SALFLI4E.
Thank you so much for your help. Have a great day! 
Thank you for using the Cambridge TownInfo centre. Have a good trip. Goodbye.