generate response: I am leaving on Monday after 13:15 in the afternoon. Please give me the reference number when you have it. Thanks!. Intent: book_train. Slots: train-day=monday, train-departure=bishops stortford, train-destination=cambridge, train-leaveat=13:15
Response: Okay I have booked you a train ticket from Bishops stortford to Cambridge for 1 person leaving at 13:29. Your reference number is 962Q6MQG .