Late 70s or early 80s movie about kid on flying purple (?) dragon
It's driving me CRAZY that I can't remember the title to this movie, and Google is no help. A boy meets, is initially scared by (I think--at least I was scared), and then befriends this huge purple (?) dragon/dinosaur creature. They fly around, have adventures. Can't remember the ending. Doesn't anyone else remember this? I feel like it was huge at the time, but I just keep getting blank stares when I ask people. Many many thanks in advance!