You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Elizabeth Parker.

ASSISTANT: How can I help you?

USER: Owing for an emergency, I want to cancel my reservation. Can you please do that for me?

ASSISTANT: Just a moment please.

USER: Sure.

ASSISTANT: I am sorry no reservation found on your name.

USER: That's fine, anyway thank you for checking.

ASSISTANT: Thank you for choosing us.