There's no need to quote the message above you...it's above you and doesn't need to be repeated...just reply..!
I wouldn't talk to someone who is eating, I'd tell them to call back once they had finished their lunch. I had a twerp on the phone not so long ago who started laughing and when the amusement subsided enough he said he was sorry about that, his colleague was throwing screwed up paper at him. Of course I immediately hung up.