Yes voice dialogue is a structured engagement/analysis of this capacity. Give structured labels/names to these 2nd persons and your mind will naturally frame the world as a system of 2nd persons on top of the usual 1st/3rd person perspectives of self.

If you find this interesting I highly suggest looking at the "Big Mind" process that's been incorporated into western Zen Buddhism.

I have also seen it posed this way: Label that 2nd person as someone sitting on the other end of a sofa with you. If someone on the same sofa that way were constantly criticizing you, would you keep listening to them or paying them any notice?