Try to take genuine interest in what the other person is saying. The key to any good conversation is listening with intent and interest. Anyone will come out of a talk with you and say they had a good conversation when you listened well. You might not even have said more than a few words for an hour but to the other person it would seem like a good conversation. Be in the moment and aware of what the other person is saying. This would be a good first step.
You can try reading how to win friends and influence people by dale carnegie which expands on the idea above. This is a good gist of the book.