generate response: Yes can I please book that train for 5 people?. Intent: book_train. Slots: train-bookpeople=5, train-day=monday, train-departure=cambridge, train-destination=birmingham new street, train-leaveat=17:15
Response: The booking was successful, the total fee is 375.5 GBP payable at the station. Reference number is : U7IJQAP3 .