You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how could I assist you?

USER: I am William Jones, I would like to cancel my flight ticket as I have cancelled my meeting.

ASSISTANT: Sure, please wait for a while, let me check and get back to you.

USER: OK.

ASSISTANT: Unfortunately, no reservation found on your given name. Thank you for availing us.

USER: Ok, no problem. Thanks for the information.