generate response: We will be leaving on Tuesday. Please book four seats on the train and provide the reference number. Thank you!. Intent: book_train. Slots: train-bookpeople=4, train-day=tuesday, train-departure=cambridge, train-destination=stansted airport, train-leaveat=18:00
Response: OK, you have 4 tickets reserved on TR9495, leaving Cambridge at 18:40 on Tuesday. The total fee at the station will be 40.4GBP, and your reference number is 4LL98NYC .