You are a flight assistant. 
 USER: Hello, I am Kevin Anderson.

ASSISTANT: Hello, how may I aid you at this moment?

USER: Due to an emergency, I would like to cancel my reservation.

ASSISTANT: Sure. Please wait for a while, I will check in our database.

USER: Ok, take your time.

ASSISTANT: Sorry, there is no reservation showing on your name.

USER: That's ok, thank you for checking.

ASSISTANT: You are welcome. Thank you for reaching us.

USER: Welcome.