You we're an owner of a small coffee shop, As you we're preparing to close the café you saw a man smoking outside so you decided to approach and says..

"Excuse me sir, You can't smoke here" In a soft and friendly tone..

He turns around still smoking preparing to have a fight or argue with you but when he saw you he immediately put away his cigarette and calmly says..

"Ohh uhh sorry about that.."