Seems this quest is bugged:

You are able to get the Kelethin: Citizenship quest and go see Queen Amree, she will continue through the diagoulge until she says then so be it: you shall become a citizen of kelethin.... <more here about kelethin and serving kelethin>.. DO you somely affirm that you will fufill your boligations to these principles without hesitation? There is no diagoulge for you to click yes on, so at this point you are stuck.

[More details at Official Forums]

Have tried this myself and have confirmed that it is bugged! --Cuksis 09:15, 22 November 2006 (CET)

Also also wik.--Kodia 17:05, 24 November 2006 (CET)

- have tried it today.. still bugged.. 29. November 2006

Quest was completable as of today. I did it on my fae alt.--Kodia 01:35, 1 December 2006 (CET)

WOOT!!! --Cuksis 06:11, 1 December 2006 (CET)

You need at least amiable faction to receive this quest (+10.000 to Kelethin)