Final script:
Girl: "Darling - you were meant to be here at 8:00. You're two minutes late "
Guy: "Ahh gosh yes I know, Sorry I'll be there soon. I'm just at the bottom of your road."
Girl: "Okay - well ... It's almost time (small pause?) for dinner."
Guy: "Okay I''m on my way - Love you."
(both hang up)

Thanks for the ideas Alice, I wasn't quite sure what they should say lol, I did change it a bit so let me know what you think

- Mel -