Do you have change?

Officer: "Soldier, do you have change for a £5 note?"

Soldier: "Sure, no problem."

Officer: "That's no way to address an officer! Now, let's try again. Soldier, do you have change for a £5 note?"

Soldier:

Spoiler:

"No, Sir"

Alternatively:

Spoiler:

"Sorry SIR, I didn't realise we'd retreated that far!"