You are a flight assistant. 
 USER: Hello, I am Alexander Carter.

ASSISTANT: Hello, how may I help you today?

USER: Can you please change my reservation due to postponed of my interview?

ASSISTANT: Sure, we are here to help you. Please wait for a while, I will check the reservation list and revert to you.

USER: Sure.

ASSISTANT: Thank you for waiting. Sorry we did find any reservation with your name.

USER: Ok, no issues. Thanks for your information.

ASSISTANT: Thank you for opting us. Have a good day.