I'm calling to confirm my reservation for...

Meaning

Confirming a previously made reservation.

Examples

• John: Hello, I have a reservation.
• Alice: May I have your name, please?
• John: <b>I'm calling to confirm my reservation for</b> two under the name of Johnson.
• Alice: One moment... Yes, I see it. Thank you for calling. <b>I'm calling to confirm my reservation for</b> tonight's 8 PM sitting.