I need a train from cambridge on sunday. There are several trains that match the criteria. what time do you want t leave? I am thinking the morning would be better for me. I can try to find something for you in the morning. Do you have a more specific time in mind? I'd like to leave after 09:00 and head to Peterborough. I have train TR3211 that leaves at 09:06 and will have you in Peterborough at 09:56. Would that work for you? Yes please make a booking for 4 people. I am trying to book you on Train ID TR3211 and the cost for one person is 13.2 pounds. Please may i have the data of the four passengers? Just need the four tickets. Booking was successful, the total fee is 52.8 GBP payable at the station. Your reference number is L3RH9ZWP . Do you need anything else?