Diplomat and the lady

This story is told by a diplomat.

If you ask a favour from a diplomat and he says "yes", he means "maybe". If he says "maybe", he means "no". If he says "no", he is not a diplomat.

If you ask a favour from a lady and she says "no", she means "maybe". If she says "maybe", she means "yes". If she says "yes", she is not a lady.