"A copy. And what is the nature of this copy? What would you do with it?"
"The copy would be identical to you, the original, in everyway you could perceive. I have a fully equipped lab, the very best equipment I could find. I would have you work with me in that lab. My goal is to develop functional nanotech. I'm hoping to create a permanent cure for cancer and all diseases."
He paused for a moment, then continued, "I must also mention that I have the ability to make certain modifications to the copy. I can ensure that the copy cannot harm me, is loyal to me, and obedient. I'm not interested in filling my soul space with slaves, so I would not use that last option on your copy."
"And what if my copy proved rebellious?"
"I'd delete your copy and go looking for someone else to work with. Though I guess I could give your copy a choice, oblivion or obedience. I'm not sure which would be worse. It if were me, I'd probably chose oblivion."