Submitted by Lady N on Sat, 08/11/2012 - 13:43
Dear [friend name].
I don't know how to repay your kindness, except perhaps to keep my distance so that I may not bring unwanted attention or harm to your doorstep.
Should you need to get in touch with me, come to [dungeon name].
-- your friend
Found in Skyrim's first DLC, Dawnguard.