Yes, you look like you would be a good candidate.
"results"
Choice "yes" 1 "no" 3
Both the yes and no choices are available with the corresponding function choice # in the dialogue for this NPC, is there something thats missing here?
Further clarifacation, Yes results are PCJoinFaction "faction" and no results are Goodbye....at least in the CS, but in game, it just loops, and keeps asking if one is sure they would like to join and you have to force close the dialogue box, which is annoying, and it doesn't actually make you part of the faction.