You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Is this flight ticket booking agency?

ASSISTANT: How can I help you at this moment? Yes, this is ABC flight booking agency. May I know your name?

USER: Sure, my name is Carol Adams. My business trip is postpone due to some issues in my office, can you change my existing reservation to another day?

ASSISTANT: Sure Adams, I will help you for this.

USER: Thanks.

ASSISTANT: Adams, I did not found any reservations with your name.

USER: Oh it's ok no problem.

ASSISTANT: Anything else to help you.

USER: No thanks. Thank you for your information.

ASSISTANT: Most welcome. Have a great day.