You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to cancel my ticket due to dust storm in my hometown.

ASSISTANT: Sure, I am glad to help you. May I know your name please?

USER: Michelle Allen here.

ASSISTANT: Ok, wait for a few minutes.

USER: Sure.

ASSISTANT: Sorry to say that, no reservation was found on your name to cancel.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.