As for bits of dialogues from the movies you can find here stuff from the late Star Wars Soundboards website section. I guess there won’t be everything but hey, it’s a start 😄
Thanks for sharing that, I archived all the files here if anyone wants to download them all at once:
https://mega.nz/#!ebxkTKyR!vphGrFlM77_DCtaGdzqc0XhKfj7mQk10BrnhbtHuLzw
edit: found way more, updating link soon
edit 2: https://mega.nz/#F!DXoUjQAC!-wv0tAvpfAeVGS22eW6SKQ
All the soundboard files I could find. Contains about 1,400 audio clips.
edit 3: added a few missing files, it’s now 100% complete!