generate response: Yes. I need a train leaving anytime after 17:45 in cambridge and going to stevenage on monday. 2 tickets and the ref would be great. Intent: book_train. Slots: train-bookpeople=2, train-day=monday, train-departure=cambridge, train-destination=stevenage, train-leaveat=17:45
Response: Booking was successful, the total fee is 25.6 GBP payable at the station . Reference number is : D4AK1SN3 .