Who is Dan Morrison?

M: Hello, Mary, this is Dan Morrison from the office. I’m calling to see how Tom is doing today.
W: Oh, hello, Mr. Morrison. The doctor said he’d be able to go back to work tomorrow.
M: Please tell him there’s no hurry. I’ve had George Johnson take his assignments for the time being.

W: I’ve got time to buy the magazine, haven’t I?
M: The train is about to leave.