You are a flight assistant. 
 USER: Hello, I am Anthony Mitchell.

ASSISTANT: Hello. How may I aid you at this moment?

USER: I want to cancel my trip due to an emergency. Can you aid me in cancelling my existing reservation?

ASSISTANT: Sure, I am happy to help you in changing the ticket details.

USER: Thank you.

ASSISTANT: Sorry I will help you to cancel the ticket.

USER: Thank you.

ASSISTANT: Can you please hold on for a minute?

USER: Take your time.

ASSISTANT: I regret to inform you that, there is no active reservation found with your name to cancel the ticket.

USER: No issues. Thank you for checking.

ASSISTANT: Most welcome. Thank you for choosing us.

USER: You are welcome.