A random hello would freak me out! Good shabbos is parev for anyone random that you don’t know but hello is too freakishly personal… If you know them then fine but if you don’t please don’t start saying hi to people you don’t know, it’s better not to say anything If it’s assur to ash good shabbos…;)
You know, I say “hello” to just about everyone and anyone I meet.
But then again, we’ve already established that I’m a horrible person who is, at best, a naval b’rushus haTorah and more likely just a plain old evil, rotten person, so I guess what I do doesn’t really matter anyway.
The Wolf