You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Rebecca Jackson. Due to some sudden changes in weather, I need to cancel my reservation. Can you please help me?

ASSISTANT: Sure, please wait a moment.

USER: Sure.

ASSISTANT: There is no reservation on your name.

USER: No problem. Thank you.

ASSISTANT: Thank you so much for choosing us.