A good way to view unique conversation is to play at various times of the day
They ought to at least make it so that if you speak to two villagers of the exact same personality type in a row that they won't give you the identical piece of conversation since the previous vlager did.
It's crazy how small dialogue is in this game in comparison to all of the past games. Like, it almost feels like the intent was to patch in dialog post-launch, but then just forgot about it.