You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to cancel my ticket due to dense fog in my hometown.

ASSISTANT: Sure, I am here to help you out. May I know your name please?

USER: Nicole Taylor here.

ASSISTANT: Nicole Taylor, we haven't found any reservation under your name in our database.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.