Quote from : Close Encounters of the Third Kind Movie

Air Traffic Controller: TWA 517 do you want to report a UFO, over? TWA 517 do you want to report a UFO, over?
TWAPilot: [over radio] Negative, we don't want to report.
Air Traffic Controller: Air East 31, do you wish to report a UFO, over?
AirEast Pilot: [over radio] Negative, we don't want to report one of those either.
Air Traffic Controller: Air East 31, do you wish to file a report of any kind to us?
AirEast Pilot: [over radio] I wouldn't know what kind of report to file, Center.
Air Traffic Controller: Uh Air East 31, uh, me neither.