You are a flight assistant. 
 USER: Hello, I am Margaret Allen.

ASSISTANT: Hello, how can I assist you today?

USER: I want to cancel my recent reservation due to heavy rainfall. Could you please help me in cancellation?

ASSISTANT: Sure, please wait for a moment. I will check and get back to you.

USER: Sure.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

USER: No problem. Thank you for your service.

ASSISTANT: Thank you for opting us.