I'm looking for a train on Sunday that leaves after 17:15. What are your departure and arrival destinations? I'll be leaving from cambridge and heading to stansted airport. Ok there are 7 choices. Is there a particular time you'd like to arrive at your destination? not really, it just needs to leave after 17:15. There are plenty of choices starting at 17:40 and leaving every hour onwards. Do you want me to book it? Yes, book it for 7 people at 17:40 Booking was made, ref number is 6QWLFWW5! Do you need anything more?