I'm sorry for the mix-up, train TR0516 is not available on Tuesday. I do have TR4173 available but it arrives in Cambridge at 12:07. Will this work?
Yes, please book for 2 people./
You are booked. You'll pay 20.2 pounds at the station. Your reference number is ES8ZDMR2. May I help with anything further?
No, thank you. That's all. Thanks!