generate response: Yes, that would be find. I'll need to book tickets for 7 people. Can I have the reference number please?. Intent: book_train. Slots: train-bookpeople=7, train-day=thursday, train-departure=cambridge, train-destination=norwich, train-leaveat=15:00
Response: Booking was successful, the total fee is 123.2 GBP payable at the station . Reference number is : KSHHCWCE .