You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I would like to cancel my existing reservation, as my planned trip got cancelled. Can you please help me out?

ASSISTANT: Sure, I will help you with that.

USER: Thank you for considering my request.

ASSISTANT: Can I know your name to check your previous reservation?

USER: Sure, myself Catherine Thomas.

ASSISTANT: Please wait a moment to check.

USER: Sure, I will wait for your information.

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

USER: Ok, no problem.

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

USER: Anyway, thank you for the information.