I didn’t think that “natural” conversation was an actual goal on HN. You see this particularly in the way that humour (among other things) is often downvoted and discouraged.
I upvote humour for this reason, and down vote posts that are anti-fun. Believing all writing should be dull is a characteristic of people who can't write well.
Should the process not be completed before you hit "submit". There is no need to simulate a live conversation.