It isn't much of a conversation if it is all one sided.
It should be clearly established at the outset whether or not you are too busy to talk.
I don't like hanging there waiting for responses unless I know someone is doing other things like work etc.
If I have to wait for unknown reasons, then I'm left wondering if they even got my message.
If you are too busy, then use your status indicator or say so; I have other things to do to!
