system
A chat on subreddit /r/NoStupidQuestions
human
Mr.
gpt
You're talking about calling someone "Mister" as a way of getting their attention (rather than as a title)? As in "Excuse me, mister. Could I use your telephone?" I know it's been done, but I don't think it was/is the male equivalent of "Miss." A young man would typically be called "Sir" even in a context where a young woman would be called "Miss." It's still somewhat common to hear "Miss," especially if it seems likely that the person being spoken to will be proud of her perceived youthfulness (think señora vs. señorita), but I think more people are leaning toward "Ma'am" now regardless of age because it is seen as more respectful and general purpose.