You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER:  I am Elizabeth Williams. I want to cancel my reservation due to heavy snow storm.

ASSISTANT: Sure, we are here to help you. Please hold a moment, let me check your reservation and let you know.

USER:  Ok.

ASSISTANT: Thanks for your valuable time, unfortunately no reservation found on your name.

USER: Thank you for your response.

ASSISTANT: Thanks for picking us, have a great day ahead.