The following short story was a product of a challenge I read about on this blog to write such a story using only dialogue. This is my first attempt of the challenge, written during one of my free-writes that happen to be about as random as a rooster in the pig barn. However, I challenge you to try it, too!
“Are you okay?”
“Yeah, I’m fine. Why?”
“You’ve been acting a little weird lately.”
“Weird? Is that what you call it?”
“Angry, then. What’s wrong?”
“Nothing.”
“Come on, I know it’s something. Is it something that I did?”
“No.”
“I’m sorry for what I did.”
“I didn’t say it was something you did.”
“Well, then, tell me who made you mad and I’ll add them to my hit list.”
“Ha.”
“Why are you looking at me like that? I’m serious.”
“No, you’re not.”
“Okay, well, maybe not a hit list. A hate list?”
“You’re not supposed to hate. It says so in the Bible. Hating a person is as bad as killing them.”
“Well then. Hit list, hate list…same difference then, right? I’ll add them to the list.”
“You’re such a dork.”
“Yeah, but you love me anyway and you know it.”
“Well, after you put the McDonalds’s on your list, you should go to confession.”
Anna E. Meyer 
Very nicely done! It’s easy to see who is talking, easy to distinguish between the two characters. I like it!
Thank you! It was fun to write, too!