Today's writing tool is about comma use in dialogue with direct address. I see a lot of writers make a mistake by forgetting to insert a common in these instances, and thereby leaving the sentence meaning unclear. Hopefully this will help:
The rule is simple: when one character addresses another character directly in dialogue, their name is separate by a comma.
"Sharon, what's going on?"
"What's going on, Sharon?"
"John, Sharon wants to know what's going on."
"Sharon wants to know what's going on, John."
"How are you, Barbara?"
"Barbara, how are you?"
"Barbara, give Jane our best."
"Dear Kathy, how's it going?"
"Sharon wants help."
"John wants to know what's going on."
"How is Barb doing?"
"Dear Kathy is a darling girl."
While I'm under the weather with this annoying flu, I hope everybody's safe and warm. Our prayers to those fighting to survive in Haiti and for those who need the strength to keep searching. God Bless.