It's really difficult to write a conversation without using names, and nigh impossible to convey different nameless voices in text. So I use color. I know it's an imperfect solution, but it's the one I've got.
Contains harsh language.
"How did we even end up with this guy? I mean, that username he uses is totally accurate! He calls himself the living embodiment of human mediocrity...damn straight. Why couldn't we have gotten a cop or a programmer or another hacker; you can never have too many hackers, that's what I always say."
"Shut up, you never say that."
"How would you know, we've known each other all of what, a few months?"
"It doesn't matter. Fate or chance gave him to us, and I can only believe there's a reason."
"You believe there's a reason for everything. You could find meaning in a bird crapping on your head."
"Just because you don't know what the meaning is doesn't mean there isn't one."
"Whatever. Do we have a way to find this Dr Visla or not?"
"We've got nothing. He's been too careful."
"Umm, may I..."
"Look, you're worthless enough as it is, can't you just keep your thoughts to yourself when your betters are talking?"
"Fifty-four, fifty-eight, thirty-seven point one. Negative one twenty-six, nine, thirty-seven point two."
"What the fuck are you talking about?"
"Look there. Or don't."
"Oh, leave him alone, he's just doing his best. Not his fault he doesn't have any particular..."
"What the fuck..."
"What is it?"
"He's done it... you've... oh, he's gone."
"What is it?"
"We've got Visla."