generate response: Okay, book me a table for 5 at 17:30 Monday. If that's not available, 16:30 would work. And I need the reference number, please.. Intent: find_train. Slots: restaurant-area=centre, restaurant-bookday=monday, restaurant-bookpeople=5, restaurant-booktime=17:30, 16:30, restaurant-food=spanish, restaurant-name=la tasca, restaurant-pricerange=moderate, train-arriveby=12:00, train-day=monday, train-departure=bishops stortford, train-destination=cambridge
Response: Booking was successful for 16:30. The table will be reserved for 15 minutes. Reference number is : CI38I8Z2 .