Barcus at the Last Light Inn.
First, I'm not sure how he got there before me, but okay.
Then, I reaffirm to him that I am, indeed, going to try to save Wulbren.
After that, and this is my issue, my dialogue options all seem wrong.  These are the options:
1.  I thought that was your mission.
2.  How did deep gnomes get trapped in the Towers?
3.  I have more important things to do.
4.  Wulbren who?
I'm not choosing 1 because I've already agreed to take on the mission of saving Wulbren.  
I don't want to choose 2 because I know how the gnomes ended up captured.  I was in Grymforge and heard all about it.
I don't want to pick 3 because I don't have anything more important to do.
And 4 isn't something I'd say because I know who Wulbren is, and if it's meant to be humorous, it just doesn't fit the moment.