Note: You can also set different automatic out of office replies for different people. Just click the Rules… button in the bottom-left corner and add a rule for each person or email subject.
Written below are some of the examples in which different types of templates are used to set up a reply in English.

I might sound nitpicky but the language is important. “Might” or “may be” or “slower than usual” are vague and don’t offer the sender all that much information about when you’re really going to respond to them. Worse, they do a horrible job of protecting the time of the email receiver who, as the responder notes, is not in the office! Such a responder implies that, not only will the vacationer reply to the email, but they may not even miss a beat. They may be slow to respond, but they also might not.
I thought it was funny but could never get away with using something like that at my org. I loved the “competent people who work for me” part – I make this joke all the time. We have some people who feel that they should have a manager personally attend to them and, at least in my case, my highly competent team is in the weeds of that work a lot more and are not rusty (like I am).