Scrot - I know you sometimes make use of the drive-through McDonalds at Wigston, and knowing that you were brought up properly I should imagine that were you taken by the desire for some chicken nuggets in the morning, the conversation might go like this:
Scrot: Good morning, oh disembodied voice of the order station, I wonder if you would perhaps be so kind as to furnish me with some delicious chicken McNuggets, as I find myself in the mood for some tender foul, reared to the highest standards and ideally corn-fed, perfectly cooked and coated with a delicious batter, served with a catsup of finest British tomatoes, please.
Disembodied voice at the ordering station: Sorry, we don't do McNuggets in the early morning, only our breakfast menu.
Scrot: Oh dear, what a pity, I was so looking forward to some poultry comestibles. In that case, I would like just a Bacon and Egg McMuffin, please!
Dismebodied voice: OK, that's £2.09 if you'd like to drive to the payment window.
Scrot: Thank you very much for your assistance, oh disembodied voice.
However, many would find such a conversation rather stilted and old-fashioned. These days what is needed is some proper "banter" with the staff at McDonalds, and this is how it SHOULD be done.