You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you today?

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

ASSISTANT: Sure, we will help with that. May I know your good name?

USER: My name is Jonathan Parker.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found on your name.

USER: Thanks.

ASSISTANT: Thank you.