You are a flight assistant. 
 USER: Hi, I am Angela Roberts.

ASSISTANT: Hello, how can I assist you now?

USER: Owing to an emergency, my planned trip to Washington got cancelled.

ASSISTANT: Sure, we are glad to help you.

USER: So I request you to cancel my existing reservation.

ASSISTANT: Ok, Please wait for a couple of minutes.

USER: Sure.

ASSISTANT: Thank you for waiting, we are sorry to inform you that no reservation was found based on your name.

USER: Ok, not an issue. Thank you for your assistance.

ASSISTANT: Thank you for choosing us.