generate response: That's fine as long as you can book it for four people. Intent: book_train. Slots: train-arriveby=20:00, train-bookpeople=4, train-day=monday, train-departure=cambridge, train-destination=bishops stortford
Response: Indeed I can book that for 4 people. Your booking was successful, the total fee is 40.4 GBP payable at the station. Reference number is : 2I1YOWD4