You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: Please change my existing reservation owing to an emergency.

ASSISTANT: Sure, We are here to help you out. May I know your name?

USER: I am James Edwards.

ASSISTANT: Please wait a while.

USER: Ok.

ASSISTANT: Thanks for being waiting. We didn't found any reservation by this name.

USER: Thank you.

ASSISTANT: Thank you for consulting us.