generate response: No preference on departure time, but I will need to book for 5 people.. Intent: book_train. Slots: train-arriveby=09:15, 9:15, train-bookpeople=5, train-day=friday, train-departure=stansted airport, train-destination=cambridge, train-leaveat=dontcare
Response: Reference number is : 1LD6SOW1 . Anything else?