generate response: I'll take the train that arrives closest to 20:30 for 4 people please.. Intent: book_train. Slots: train-arriveby=20:30, train-bookpeople=4, train-day=wednesday, train-departure=bishops stortford, train-destination=cambridge
Response: I have booked for you Train Tr9178 the total fee is 40.4 GBP payable at the station. Your Reference number is : IKRVR8G2 .