How to Write a Good Book

Part Twelve- Dialogue

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"Come on David, let's move,"

She beckoned towards me with her free hand. Her other hand was holding a pistol.

I ignored her and leaned against the wall. She grunted angrily.

"David, my team infiltrated this asylum to get every resident the hell out of here. They're gonna blow this place up. So let's move,"

I shifted a pebble to the side with my toe. I didn't care how angry this woman was, but I wasn't leaving.

"We are leaving now. I don't care what you think, we need to leave. Come on!"

She tried desperately tugging at my sleeve. I wasn't going to leave.

"I'm not leaving, ma'am. I grew up in this place. It may seem crazy to you, but it's true. I'm afraid of the unknown. I'd rather stay here and die."

She stopped tugging on my sleeve and mumbled, "... You are insane."

A sudden flash of bright light blinded me and a ringing sensation almost exploded my eardrums.
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Now that, my readers, is effective and properly written dialogue. That's how dialogue should be written in every book. Here are incorrect examples:
Bob: Oh, um no thanks Roger.
Roger: Why?
Bob: My parents don't want me to.

OR this:
Bob walked to the fridge. "Hey Roger can I drink some milk?" Roger nodded his head. "Sure."

The first example is wrong because that's a play-style type of dialogue, and ONLY meant for script. The second example is wrong because you need to hit the enter/return key after someone speaks, like the original example. Now here are a few rules to punctuation and dialogue:
1. If a character isn't done speaking, put a comma after the last word of the sentence.
Example: "Yes," she started to say.
2. If a character is done speaking, put a period at the end of the sentence.
Example: "Yes." she stated.
3. If two or more characters are having a conversation, make it clear who's speaking.