I sent a message to a person saying that I wanted to consult something. He said he would return my message when he was not at home.

It depends on your relationship.

If you are a friend or a super friend.

Then he will definitely reply to your message.

If you don't know each other well or your relationship is already stiff.

He didn't even have time to avoid it.

How should I reply to your message?

If you really have something to ask, just send it directly to the other party.

When the other party sees a problem, he should return as long as he has time.