Task-oriented dialogue about: train

Hi, I want to catch a train from Peterborough to Cambridge. Can you please tell me what the schedule is for the rout?
I would be happy to help. What day are you wanting to take the train?
I want to arrive by 15:45 on tuesday.
Booking was successful, the total fee is 16.5 GBP payable at the station . Reference number is : 3XNW24TQ .
Thank you goodbye
I'm sorry, the schedule for Tuesday shows TR0674 arriving at 15:38 in Cambridge. I will re-book. Is it one ticket you need?