I have a few lines where the player delivers a package to some NPC's. One of the lines of topic are:

(Hand over package)... to which the NPC will reply with a pre-made generic sound of "Thanks, here's something for you."

On a few, i would like to have them not actually move their lips. same topic of:

(Hand over package).. and then the npc would reply with (Quietly takes the package and discretely tosses some coin your way).

Now I made the line, and i tried by making a sound file, and they still read the line as if it were that long. I also tried with having Lip syncing on and off

on the dialogue. Doesn't seem to matter, they still move their mouths when replying.

Help please on trying to get them to have a silent, but a worded reply without lips moving? Thanks in advance.