You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to cancel my ticket due to sand storm in my place.

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

USER: Timothy Roberts here.

ASSISTANT: Please hold on a moment.

USER: Sure.

ASSISTANT: Timothy Roberts, no reservation has been found on your name in our database.

USER: No problem, thank you.

ASSISTANT: Thank you for approaching us.