There are two trains that arrive in Peterborough by 18:30. What time are you planning to leave Cambridge?
I just need to arrive by 18:30 in peterborough the departure time doesn't matter.
TR8293 arrives at 17:56 and TR2913 arrives at 18:24. Would you like me to book tickets on one of them?
I need tickets for 8 people. Can you book and give me the reference number?