generate response: Please book 10 round trip tickets for Wednesday at 21.39. Please send me the confirmation number along with the total cost of everything.. Intent: book_train. Slots: train-bookpeople=10, train-day=wednesday, train-departure=london liverpool street, train-leaveat=21:39, 21.39.
Response: Your tickets are booked. The confirmation number is IKGWPF5T and the total cost is 166 GBP which you can pay at the station.