show me a list of flights on july twenty second leaving dc to dallas leaving dc after 6 pm
O O O O O O O B-depart_date.month_name B-depart_date.day_number I-depart_date.day_number O B-fromloc.state_code O B-toloc.city_name O B-fromloc.state_code B-depart_time.time_relative B-depart_time.time I-depart_time.time