"This isn't a conversation that you can avoid, Dean." Zachariah knew plenty about the boy, even if he didn't know much about Zach at all. He had been watching him from afar. That had been his duty, after all. Seeing to it that the Winchester boy got to where he needed to be when the time came. He was the only one in the world right now that could be used against Lucifer. Dean was Michael's sword. Eventually, he was going to have to come to terms with that and accept the role that he was given. Judging from what he had heard of Dean, Zachariah knew that he had quite the job ahead of him. But he wasn't unprepared. He had done his homework and he was one of heaven's most successful employees. There was no way he was going to fail. Zachariah did not fail. It wasn't possible for him to do so.
Clasping his hands together in front of himself as Dean eased away from him, Zachariah smirked. "I'm sorry. I didn't mean to surprise you. But what can I say? I'm on a schedule." He stepped around Dean, keeping him from continuing on the path he had been walking without having to move around Zachariah. Unfortunately for Dean, that wouldn't be very easy. "You did a very good job with those ghosts. Top of the notch work, that was. I gotta admit: I'm pretty impressed."
Even with the odds stacked against him - lack of memory and all - Dean had managed to defeat those ghosts with that brother of his and all their friends. It was impressive, to say the very least. It also reinforced the point that he was going to make, even though there was a part of him that believed that these people were going to be foolish enough to ignore him no matter what he did or said. It was going to take some serious work to get these people where they needed to be, that was for certain. Especially Dean.