what flights are there between washington dc and san francisco leaving washington after 6 pm on wednesday
O O O O O B-fromloc.city_name B-fromloc.state_code O B-toloc.city_name I-toloc.city_name O B-fromloc.city_name B-depart_time.time_relative B-depart_time.time I-depart_time.time O B-depart_date.day_name