good talking to you
(it was) good talking to you
I'm glad I talked to you; that was a good conversation. A polite phrase used when leaving a person with whom one had just been talking. I'd better get going. Good talking to you! It was good talking to you, Sarah. We'll let you know our decision on Monday.
(It's been) good talking to you.and (It's) been good to talk to you.; (It's been) nice talking to you.
a polite phrase said upon departure, at the end of a conversation. Mary (as the elevator stops): Well, this is my floor. I've got to get off. John: Bye, Mary. It's been good talking to you. John: It's been good talking to you, Fred. See you around. Fred: Yeah. See you.