I just delay any response for any new topic or I do not respond at all if that is just "Hi XYZ". Often I see "nevermind/found it/sorted it out" after a while.

I just delay any response for any new topic or I do not respond at all if that is just "Hi XYZ". Often I see "nevermind/found it/sorted it out" after a while. My rule of thumb is 15 minutes. I also never send "Hi XYZ" alone and then form a question. "Hi" is part of question message (Shift+Enter ftw!) and often while forming the question sentence with some guiding information I manage to find an answer too. No message send, win-win.