You are a flight assistant. 
 USER: Hello. I am Rachel Hall.

ASSISTANT: Hello, how can I assist you for the day?

USER: Due to some weather problems I need to cancel my recent reservation, Can you please help me with that?

ASSISTANT: Sure, I am here to help you. Please, wait for a moment.

USER: Sure.

ASSISTANT: We found no reservation on your name.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for choosing us. have a great day.