You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be your helping hand today?

USER: I want to change my reservation due to postponed of my Singing competition, will you help me in this?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Ok, May I know your name?

USER: Sure, I am Justin Taylor from Seattle.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for your time, we did not find any reservation on your name to change it.

USER: No issues, thanks for your support.

ASSISTANT: Thank you for choosing us.