Well my dream like version is to implant the 'Gothic chatter system' and play some light instrumental music in the background while characters chat.
http://www.youtube.com/watch?v=qyG_mnBS6zg
http://www.youtube.com/watch?v=-NmX9vvO42o&feature=bf_next&list=PLA0BCA6C931F24AE7
Of course I don't know if its technically possible to implant the 'system' into the game, so you can always mix the music and some random chatter sounds (that may or may not contain understandable words) and get pretty good effect.
PS: Gothic - its a game name (I think Gothic 2 is the best example of that system)
http://www.youtube.com/watch?v=qyG_mnBS6zg
http://www.youtube.com/watch?v=-NmX9vvO42o&feature=bf_next&list=PLA0BCA6C931F24AE7
Of course I don't know if its technically possible to implant the 'system' into the game, so you can always mix the music and some random chatter sounds (that may or may not contain understandable words) and get pretty good effect.
PS: Gothic - its a game name (I think Gothic 2 is the best example of that system)