generate response: I'd like to leave at 20:15. There will be 8 people traveling with me.. Intent: book_train. Slots: train-bookpeople=8, train-day=tuesday, train-destination=broxbourne, train-leaveat=20:15
Response: Booking was successful, the total fee is 143.19 GBP payable at the station . Reference number is : ZKT87GL0 .