Funny observation: in English today, to refer to someone we say "You". Where does this come from? Let's explore the history of the word. You is from Old English, ēow, related to Old Norse yðr. This is a plural way to refer to people, while "Þú" or Thou(pronounced roughly the same, Thoo) refer to an individual. After several hundred years, "You", or Yow/ȝu assumed the role of formal reference to an individual as well. This idea of pluralism for formality is not alien to Indo European languages, Romanic languages do it all the time. In Modern English today, Thou is now archaic, not within the conventional language, and "You" has assumed the singular case as well. But in many parts of the world, a new plural has emerged. Most popular is the Appalachian/Southeastern American "Y'all", which is a combination of "You" and "All". I have noted myself and others however, using "y'all" as singular while assisting people I don't know at work. Y'all has become the "formal" and singular case, while the previously formal + singular from plural word, "You" is now singular and informal.
Will be away for a week, my grandfather who has both brain and lung cancer had a seizure today and has bleeding in the brain. He's in a coma and may not make it, so we're making an emergency visit to Georgia to visit him. Y'all have a great week, cheers