When you make good manners a habit they will serve you for a life.
When you are behaving like a king: elegant and calm, do everything as it should be, only to make a good impression on the stranger and gives excellent forget that you and he can no longer see.
Another thing, when you act like this all the time. If a person poprobudet behave this way at least a week, he will feel the difference between impressions before, during normal behavior, and now, when he was just curious and pleasant to deal with. Moreover, in a week he himself wants to behave, and this is a habit.