> “Hi. You there?” Just reply "Hi" or "Here" or even "Not here" (if your manager understands jokes and you are ready to leave). You do not need to wait for th

> “Hi. You there?” Just reply "Hi" or "Here" or even "Not here" (if your manager understands jokes and you are ready to leave). You do not need to wait for the answer after that. Especially if it is not your work day. Please understand, that your manager is trying to solve a problem, and getting your help -- is not the only option for your manager. That is why he may not want to spend his time explaining the problem to you if you are not available anyway.