Mister Buddwing

Mister Buddwing is a 1966 American film drama directed by Delbert Mann and starring James Garner .

Waking up on a New York park bench, a mans mind is a total blank. He has no identification on him, just a slip of paper in his pocket with a phone number on it.The number leads him to a woman, Gloria, who doesnt recognize the man but gives him some money out of pity. For the purpose of identifying himself, he invents a name out of thin air, spotting a Budweiser beer truck go by just as a jet plane passes overhead. ........

Source: Wikipedia