You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I aid you?

USER: I am Barbara Green. As my plan for receiving my brother has been Cancelled. So, I want to cancel my recent reservation.

ASSISTANT: Sure, Please wait for a moment.

USER: OK,.

ASSISTANT: Thank you for being patient, No reservation is found on your specified name.

USER: No problem, Thank you for your response.

ASSISTANT: Thank you for choosing us.