I am looking for a train. The train should go to cambridge and should arrive by 11:45 Okay, where are you departing from? I want to leave from London Liverpool Street. Okay, what day of the week are you looking for the train? I will depart on Wednesday. Booking was successful, the total fee is 16.6 GBP payable at the station . Reference number is : FKDUE0OJ . Wait, this is for 3 people. Are there enough available seats? It looks as though they have only booked you for one ticket, I'm sorry. Could you redo booking for 3 people please. Okay, the booking has been revised to reflect three guests. My apologies for that. Can I get the new reference number? Of course! You're new reference number is ZF8QFW7E . Can I help you with anything else?