generate response: Just any time leaving after 16:00, and I need tickets for 5 people.. Intent: book_train. Slots: train-arriveby=dontcare, train-bookpeople=5, train-day=thursday, train-departure=cambridge, train-destination=london liverpool street, train-leaveat=16:00
Response: Booking was successful, the total fee is 83 GBP payable at the station . Reference number is : IG0M4C9S .