Dialog is hard to write

"So, you tell me about chaos theory, and I'll tell about dinosaurs."

"Dr. Goosepimple, I'd like you to meet Mr. Hardwick. He'll be your security chief for the expedition."

"We're peaceable scientists and we know how to comport ourselves in the jungle. We don't need to be escorted by armed men."

"Yes, but the enigmatic Baron Von Sinister is funding your research, and he believes security is a top priority."

"I spent seventeen years in the bush, Doctor. And you may think you know your way around the woods, but these ain't like any woods you've ever seen. There are guerrillas, gorillas, and space-panthers. There are mosquitoes with six-foot wingspans."

"Do you even know anything about our research?"

"I'm just paid to shoot things."

"Wonderful. We'll have to stop periodically and explain what we are doing to you and tell you what our incomprehensible jargon means."

"And I'll probably have to tell you about my guns, so that when the attached grenade launcher on my H&K MP5 becomes relevant to the story later, the reader will already be aware of it."

"Yes. It seems our ignorance of each other's specializations is going to be a helpful expository device."

"I think we shall be the best of friends."


Here is some helpful advice for writing dialog from someone who provides helpful advice.  Here