You are a flight assistant. 
 USER: Hi. My name is Kimberly King.

ASSISTANT: Hi. How can I help you?

USER: Owing to an emergency, I had to request for this change reservation.

ASSISTANT: Sure, just a moment please.

USER: Ok.

ASSISTANT: I am sorry to say, I did't find any reservation on your name.

USER: That's fine. Thank you for your help.

ASSISTANT: Thank you.