Need help completing a dungeon that isn't listed in the Dungeon Finder
So, I've noticed not all instances are listed in the random dungeon finder. I have a class quest (rogue) that asks me to kill a certain boss in an unlisted dungeon. The dungeon is Temple of Atal'Hakkar for the quest The Azure Key. Is there a good way of going about this? I've tried to get a group together and I don't have a guild to ask. Just started playing recently, but I'm hard-stuck here.
Any help or info would be appreciated. Is there a way to queue for the dungeon that I'm just missing?