You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you aid me to cancel my reservation due to bad weather conditions?

ASSISTANT: Sure, I will help you. May I know your name?

USER: Christine Johnson here.

ASSISTANT: Sorry, there are no reservation found on your name.

USER: No problem. Thank you.

ASSISTANT: Thank you for choosing us.