all flights from washington dc to san francisco after 5 pm on november twelfth economy class
O O O B-fromloc.city_name B-fromloc.state_code O B-toloc.city_name I-toloc.city_name B-depart_time.time_relative B-depart_time.time I-depart_time.time O B-depart_date.month_name B-depart_date.day_number B-economy I-economy