A Quiet Morning

The car dealership was virtually empty that morning. They encountered slow mornings quite frequently, so the staff knew that it did not mean anything serious.
The employees were trained to spot potential buyers from a mile ahead. Many people want to gaze at beautiful, expensive cars, but not many people can buy one. Thus, when the employees spotted the old man, they quickly regarded him as somebody who did not belong in the store. Was that, however, the correct decision?