i would like to book a flight on june first from los angeles to pittsburgh in the late afternoon
O O O O O O O O B-depart_date.month_name B-depart_date.day_number O B-fromloc.city_name I-fromloc.city_name O B-toloc.city_name O O B-depart_time.period_of_day I-depart_time.period_of_day