You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: Please cancel my recent reservation, due to some health issue.

ASSISTANT: May I know your name please?

USER: I am Donna Hall.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: I am sorry to say that there is no reservation found under your name.

USER: Ok, Thank you.

ASSISTANT: Thank you for reaching us.