Effective dialogue is like the Swiss Army knife of fiction. It contributes to character development and helps move the plot along. Sometimes dialogue helps root us in a setting, and it is essential to making scenes work. Need to increase tension? Dialogue can do that, too.
Dialogue needs to sound like something real people would say, only better—more intense. We expect characters to sound distinct, and when done really well, a reader is able to distinguish who is speaking without having to rely on a dialogue tag.
Writers taking this seminar will work on developing their ear for dialogue and learn techniques to help them write unique, authentic dialogue for all of their characters.