sounds great what you are doing there. always dreamed of a highly sophisticated AI for Npc talking...
atm i dont think that we will use this in our game, but maybe in one of my projects i currently develop in flash
i just dont get one point, in your post you said, flash would not allow you to I/O files.
what about xml? wouldnt that serve your needs?
you could just create a xml-table with strings and combine them with userinput array request.
same thing if you wanna safe some userinput (notices for example)
end of
cheers
manarius