You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: My scheduled examination dates has been postponed. So, I would like to change my reservation which is under my name. Can you please help me with that?

ASSISTANT: Ok, can I know your name to check your existing reservation status?

USER: Sure, my name is Amy Johnson.

ASSISTANT: Please wait for a while.

USER: Ok, take your time.

ASSISTANT: Amy Johnson, there is no reservation found under your name.

USER: Ok, no issues.

ASSISTANT: Sorry, keep reaching us for your further bookings.

USER: Thank you for checking.

ASSISTANT: Have a great day Amy Johnson.