You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: My name is Michelle Green. Owing to an emergency, I want to cancel my reservation.

ASSISTANT: sure. Wait for a while.

USER: Ok.

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

USER: No problem, thank you for your quick response.

ASSISTANT: Thank you.