Every so often, Arthur considers opening those blinds. He thinks things like "there might be something interesting outside," or "it sure does get dark in this room."
But then he's like "No."
No, Really, I Gotta Go
I find ending conversations on the phone really awkward. It's one reason why I don't like talking on the phone, or really in any situation in which you're not in the same place, and might need or want to end the conversation.
I just find it really awkward to say "TALKING HAS CONCLUDED". Not that I'd phrase it that way in all caps, but still.