generate response: Can you try for Saturday at 13:00?. Intent: book_train. Slots: restaurant-area=centre, restaurant-bookday=saturday, restaurant-booktime=13:00, restaurant-food=modern european, restaurant-name=riverside brasserie, train-bookpeople=6, train-day=saturday, train-departure=cambridge, train-destination=stansted airport, train-leaveat=20:00
Response: How many people will be dining?