generate response: That sounds great. Can you please book 5 tickets?. Intent: book_train. Slots: train-bookpeople=5, train-day=friday, train-departure=cambridge, train-destination=stevenage, train-leaveat=18:30
Response: Booking was successful, the total fee is 64 GBP payable at the station. Reference number is : QAF9QUO2 .