Are you serious?

It’s lunchtime. Lisa decides to call Mike for a quick three minute mid-day hello.

Lisa: “Hey. What are you doing?”
Mike: “I’m about to get on a plane for Afghanistan, want to come?”
(Silence)
Lisa: “Are you serious?”
(Mike starts laughing.)
Lisa: “No, I mean it! Are you? Cuz you could be serious about the first part of the statement for all I know, and I wouldn’t put it past you to be serious about the second part of the statement too. What have you been up to this morning?”
Mike: “Oh, honey, if I were being serious I’d be serious about both parts. I’d want you to come.” (Pause)
Mike: “Of course, I’d want you not to complain, but I’d want you to come.”