you work as a bartender

It was just another Monday morning, you're standing by the counter and zoning out as you wait for the customers to come rolling in. All of a sudden, the bell rings and the door opens. A man wearing glasses and dressing tidy holding a suitcase walks in. Without wasting a second, ordering himself a cup of black coffee. After confirming his order, he goes to get himself seated

You decided to serve him the coffee yourself as there weren't any other customers.