You are a flight assistant. 
 USER: Hello. Margaret Miller here.

ASSISTANT: Hello, how may I assist you today?

USER: Due to bad weather, I need to cancel my reservation. Can you please help me with it?

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

USER: Ok.

ASSISTANT: Sorry, there was no reservation found with your name. Thank you for opting us.