You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Due to an emergency I want to cancel my recent recent reservation, can you please help me with this?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Let me know your name to check for existing reservation.

USER: Nancy Wilson here.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found on your name to cancel.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for choosing us.