i want a flight from san francisco to denver leaving san francisco in the afternoon arriving denver around 5 in the afternoon
O O O O O B-fromloc.city_name I-fromloc.city_name O B-toloc.city_name O B-fromloc.city_name I-fromloc.city_name O O B-depart_time.period_of_day O B-toloc.city_name B-arrive_time.time_relative B-arrive_time.time O O B-arrive_time.period_of_day