generate response: Saturday please.. Intent: book_train. Slots: restaurant-bookday=saturday, restaurant-bookpeople=1, restaurant-booktime=21:00, restaurant-name=nandos city centre, train-bookpeople=1, train-departure=bishops stortford, train-destination=cambridge, train-leaveat=18:00
Response: You are now booked for Saturday at Nandos City Centre. Your reference number is RMJ6DTL . Can I help you with anything else?