please find a flight from ontario to westchester that makes a stop in chicago on may seventeenth one way with dinner
O O O O O B-fromloc.city_name O B-toloc.city_name O O O O O B-stoploc.city_name O B-depart_date.month_name B-depart_date.day_number B-round_trip I-round_trip O B-meal_description