Well, it hardly matters. He always says the same thing, and though some responses seem to move the conversation along a bit, it doesn't take long before he gets annoyed and starts over again. Huh?
He's clearly looking for specific responses, almost as if he's reading a script that you don't have. Oh, wait, he's an actor, right?
That's it -- he's trying to finish the scene he was filming when he died. As he says, he likes to finish what he starts, and he won't move on until he can finish that scene.
We just need to find that script, which is in his apartment.
How do I find Frank's apartment?
How do I get through the script correctly?