i am looking for a train. The train should depart from Peterborough and should go to Cambridge. There are many trains available. Do you have a specific day or time in mind? I would like to travel on Sunday. Great, and what time on sunday would you like to either leave after or arrive by? I need to leave after 17:15. can i book for you? Yes I need it booked for 2 people. The total fee is 26.4 GBP payable at the station . Reference number is : CW3O4QG9 . Is there anything else I can assist you with?