generate response: That sounds good. Please book it for 6 people and can I have the reference number?. Intent: book_train. Slots: train-arriveby=10:00, train-bookpeople=6, train-day=sunday, train-departure=cambridge, train-destination=london kings cross
Response: Train TR3207 is booked for 6 people. The reference number is BAAL6J4H and the total fee is 113.28 GBP payable at the station.