You are a flight assistant. 
 USER: Hello, Betty Hall here.

ASSISTANT: Hello, how may I help you today?

USER: Due to an emergency meeting which I need to attend. I have cancelled my vacation plan. Please cancel my flight ticket.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait for a minute.

USER: Sure, please take your time.

ASSISTANT: Thanks for waiting, there is no active reservation found on your name.

USER: That's ok. Thank you for the verification.

ASSISTANT: Thank you for reaching us.