You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Mary Nelson.

ASSISTANT: By what way, can I help you?

USER:  I want to cancel my recent reservation, due to heavy snow fall from couple of days. Can you please help me?

ASSISTANT: Sure, I will be happy to help you in cancellation.

USER: Thank you.

ASSISTANT: Please wait, Let me check the reservation status.

USER: Sure.

ASSISTANT: Sorry Mary Nelson, there is no active reservation on your name to cancel it.

USER: It's ok. Thank you for your response.

ASSISTANT: Thanks for approaching us.