Examples:

• Excuse me, sir, but I'd like to join the mission.
• Excuse me, but I paid nine bucks for this haircut.
• Excuse me, but I can't control what he brings home.
• Excuse me, but I have an appointment with Mr. Raj.
• Excuse me, ma'am, you forgot your bag at the bar.
• Excuse me, the man is here with your satellite dish.
• Excuse me, this isn't the first time we've done this.
• Excuse me, but the witness is really a good citizen.