Overview
Hello-Goodbye is a 1970 British comedy film starring Michael Crawford, and was the final film directed by Jean Negulesco.
Plot
Harry England, a British car salesman on a trip to France, meets a Baroness, "Dany", when her Rolls-Royce breaks down. They spend a few days together and become lovers before she disappears one night, but Harry does not know her surname.
The Baron then hires Harry to teach his teenage son about cars on their country estate. Harry encounters the Baroness again and their affair continues. Harry falls in love and asks the Baroness to leave the Baron, who has taken up with a lady of his own.
Cast
From Wikipedia (CC BY-SA 4.0).