You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

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

ASSISTANT: Sure, may I know your good name?

USER: I am William King.

ASSISTANT: Please wait for a moment.

USER: Take your time.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

USER: No issues. Thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.