Open with
Hi, I'm calling to confirm an interview.
Then say
- It's Alex, booked for tomorrow at 10am.
- I wanted to check that the time still stands.
- Is there anything I should bring?
- Could you tell me how to find you?
If they ask
- What was the name again?
- Alex.
- The time has changed.
- No problem. What's the new time?
- Just come as planned.
- Understood. See you then.
Ending
Great, tomorrow at 10am. Thank you.