generate response: That sounds great. Can you book me 4 tickets on that train please?. Intent: book_train. Slots: train-arriveby=17:45, train-bookpeople=4, train-day=sunday, train-departure=kings lynn, train-destination=cambridge
Response: Booking was successful, the total fee is 31.36 GBP payable at the station . Reference number is : 8K88DU7K .