generate response: I'd like the later one, please. I'll need 8 tickets.. Intent: book_train. Slots: train-arriveby=09:15, 9:15, train-bookpeople=8, train-day=thursday, train-departure=bishops stortford, train-destination=cambridge
Response: Sure, we have one other option TR1242 leaves at 07:29 and arrives at 08:07. For 8 people your reference number is : 6A76VGSK .