<human>:  What was the first flight of the Wright brothers?
<bot>: The Wright brothers’ first flight was on December 17, 1903. They flew a glider for 12 seconds at an altitude of 120 feet. The glider flew in a circle at a height of 120 feet. The glider was made of wood and fabric, and had two sets of wings. The glider was powered by a bicycle engine, and had a propeller that was connected to a rope that was pulled by the brothers. The brothers did not have a name for their invention, so they called it the “Flyer.”