generate response: Yes please book it and I still need the reference number for both, the train and restaurant.. Intent: find_train. Slots: restaurant-area=dontcare, restaurant-food=indian, restaurant-name=royal spice, restaurant-pricerange=cheap, train-day=wednesday, train-departure=cambridge, train-destination=birmingham new street, train-leaveat=16:30
Response: Before I can book the train, I need to know how many tickets you require.