You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kimberly Wilson.

ASSISTANT: How may I guide you today?

USER: My scheduled examination dates has been postponed, could you please help me with changing my recent reservation?

ASSISTANT: Kimberly Wilson, let me check your previous reservation for a moment.

USER: Sure, take your time.

ASSISTANT: I am so sorry to inform you, there is no flight reservation available.

USER: That's ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for using our services. Have a wonderful day.