generate response: Yes I need a booking for 2 people. Please book the one leaving at 20:11.. Intent: book_train. Slots: train-bookpeople=2, train-day=saturday, train-departure=kings lynn, train-destination=cambridge, train-leaveat=19:45
Response: Train TR1120, departing Kings Lynn at 20:11 has been booked for 2 seats. Your reference number is O5BX1Y1G .