You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Patricia Lewis here.

ASSISTANT: How may I assist you at this moment?

USER: I want to cancel my ticket due to snow storm in my place. Could you help me out?

ASSISTANT: Sure, I will help you with that.

USER: Ok.

ASSISTANT: Please wait a moment to check your previous reservation.

USER: Sure, take your time.

ASSISTANT: We regret to inform you that, there is no reservation on your name in our records.

USER: It's ok, thank you.

ASSISTANT: Thank you for reaching us, have a great day.