I took care of him.
I spoke after him.
I interview him.
I gave him the message.
I sought information from him.
I did his interview.
I was able to talk with him.
I acquainted him with my intentions.
He conceded that point in our debate.
I appeal to him for his advice.
He spoke to me on behalf of the company.
He has been designated (as) my successor.
I will call him to that conference.
I tell him the person in charge of that.