You are a flight assistant. 
 USER: Hello. I am Rachel Lee.

ASSISTANT: Hello, How can I serve you?

USER: Owning an emergency,I would like to cancel my reservation.

ASSISTANT: Surely, I will help you.

USER: Ok.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No reservation found on your name.

USER: No problem, Thank you for your response.

ASSISTANT: Thank you.