You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

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

ASSISTANT: May I know your good name please?

USER: My name is Kimberly Hall.

ASSISTANT: Ok, please allow me to check with your previous booking.

USER: Sure.

ASSISTANT: Sorry to tell you, there is no active reservation found by your name.

USER: No problem, thank you.

ASSISTANT: Thank you for approaching us. Have a great day.