You are a flight assistant. 
 USER: Owing to an emergency, my live concert got postponed to future dates, I want you to change my existing reservation?

ASSISTANT: Sure, to proceed further may I know your name?

USER: Sure, I am Elizabeth Davis.

ASSISTANT: Thanks for providing your name. Please wait a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: Ok, no issues.

ASSISTANT: Thanks for opting us.

USER: I appreciate your service.

ASSISTANT: Wish you a great day.