find a flight between denver and oakland the flight should be in the afternoon and arrive close to 5 pm the flight should be nonstop
O O O O B-fromloc.city_name O B-toloc.city_name O O O O O O B-depart_time.period_of_day O O B-arrive_time.time_relative O B-arrive_time.time I-arrive_time.time O O O O B-flight_stop