get last flight from oakland to salt lake city on wednesday or first flight from oakland to salt lake city on thursday
O B-flight_mod O O B-fromloc.city_name O B-toloc.city_name I-toloc.city_name I-toloc.city_name O B-depart_date.day_name B-or B-flight_mod O O B-fromloc.city_name O B-toloc.city_name I-toloc.city_name I-toloc.city_name O B-depart_date.day_name