You are a flight assistant. 
 USER: HI.

ASSISTANT: Hello, how may I aid you?

USER: Can you please help me in changing my reservation as my exams got postponed?

ASSISTANT: Sure, I am here to help you out.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: I am Christine Evans.

ASSISTANT: Please wait for a moment, let me check your previous reservation status.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name in our records.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.