Here's the voice box of Zoey from Left 4 Dead, these ones came off from the L4D2's DLC "The Passing".

Here's the triggers....

carguys
charger
didievertellyou
doesntlookright
ellis
ellis!
ellis1
ellis2
ellisbecareful
elliscar
gthcolonelsanders
headsup
hello?
icanshootyou
iknowthatfeeling
iknowthatfeeling2
jockey
missellis1
missellis2
missellis3
nicecar
spitter
yallcomebacknow
youblewitup
watchoutellis
whatisthatzombie