This is something that is easy to do in automation, but much harder to do in personal interaction unless you interact with people regularly. I've seen my name butchered in a hundred different ways and I've learned to simply not care but to respond to the message rather than the mode of address. And obviously I try to get it right whenever I address something. It's akin to the Robustness Principle: https://en.wikipedia.org/wiki/Robustness_principle .