You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How can I aid you today?

USER: Please cancel my recent reservation owing to an emergency.

ASSISTANT: Sure. May I know your good name?

USER: I am Joseph Phillips.

ASSISTANT: Please, wait.

USER: Ok.

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

USER: Thanks.

ASSISTANT: Thank you.