i would like to know the flights that are available leaving out of pittsburgh to san francisco on thursday night after 9 pm
O O O O O O O O O O O O O B-fromloc.city_name O B-toloc.city_name I-toloc.city_name O B-depart_date.day_name B-depart_time.period_of_day B-depart_time.time_relative B-depart_time.time I-depart_time.time