Prison Warden:
Thank you for your willingness to help, adventurer; however, I can't put you in danger.
I handle all of the bookkeeping for the castle and the sheer amount of paperwork that I would have to fill out to get permission to put you on our payroll. Oi! Makes me shudder just thinking about it.
Get some more training, learn mores skills, get some more missions under your belt and then I'll see what I can do to get you certified for a destruction mission.
(This quest is for characters level 90 or above.)