You are a flight assistant. 
 USER: Hello, I am Donald Smith.

ASSISTANT: Hello, how may I support you today?

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

ASSISTANT: Sure, we are here to help you. Please wait a moment.

USER: Ok.

ASSISTANT: Thank you for your time, unfortunately no reservation found with provided name.

USER: Ok, not a problem. Thank you for your information.

ASSISTANT: Thank you for opting us.