Buy two healing potions and two spare daggers.
You do so, looking the opposite way of Nadarr as he puts on his pants.
Bouchart
Buy some fine clothes while talking to him and equip them over the haunting clothes afterwards.
"We are adventurers in search of a place deep in the mountains. It is an abandoned dwarven fortress from what I know. Anything you can tell us about it and the creatures that lurk would aid us greatly. We might even get rid of them for you if you ever go through this path again."
After clothing up with the fine clothes, Aurel fixes his collar and brings out the two wine bottles he bought from the inn.
"This here is some excellent wine of the finest vintage. I know you would prefer the exquisite dwarven ale but a bit of a shake-up isn't bad from time to time, no? Let us drink over a cup or two while we exchange information. If you find the wine to your liking, I am willing to separate with this unopened bottle as well, at a price."
Try to haggle about the bottle of wine and gather more information from him.
He stops for a moment after he hands you the expensive and fine clothes. You two sit down by your camp as the others begin to talk with some of the others; the guards and drivers.
"I was hoping you wouldn't say that... It was many years ago when it became forgotten... For a purpose. We lost many great treasures in there, even our beloved..." A tear rolls down his eye. "Our beloved flagon of ale procurement..." He wipes his eye and shakes his head. "But you must wonder what it was that made us leave. Well, it wasn't abandoned, as you can probably tell... It was sacked. Some mages with dark magic came in and killed everyone. There was one, by the name of Ur, and he came and killed most of our kind. Him and his mages, they weren't normal. He... He revived those he killed. A necromancer some say he is. I don't know if they're still there, but his spawn is for sure. His little mage followers and the undead that plague there.
If you kill Ur, I'll be in Crimmor for a few weeks, and then I'll be headed back to the mountainhome to the east of here. If you find him there and kill him, bring me his head. And that flagon... Our dear sweet flagon... I don't care what you find and keep in those damned halls, but I'll make you and all your comrades very wealthy if you do so. Everything you can carry from that place, you can keep. But let me know, if you do survive, if he lies dead. I'll send word to my lord and we will send a party of dwarves to reclaim it... And your names will be recorded in their halls as the savior and reclaimer. Do this, and you do a favor for all dwarves and the living."
He tries some wine but you see he doesn't like it too much. He doesn't want the other bottle of wine.