Carbon has a built in bot for it.
Le Bot's is older than the recent version of the quest (requiring the Flawless DracoHorns) but if you run the QuickBot and then in Bot Manager put a "Get Drop: Flawless DracoHorn" you may be able to get it to coordinate and turn in. It's what I do when I need Celestite and use Soul Searching, as that doesn't pick up Celestite on its own.