You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Myself Paul Hill.

ASSISTANT: Yes Hill, how may I help you?

USER: Actually, Yesterday night I have reserved my ticket with UA airlines. Suddenly the vacation has been cancelled. Can you please help me in cancelling my reservation?

ASSISTANT: Sure, I'm happy to help you.

USER: Ok.

ASSISTANT: Please hold for a moment, let me check in our data base.

USER: Sure, I'll be waiting.

ASSISTANT: Sorry to inform you Hill, there are no flight ticket reserved on your name.

USER: I think I have done some thing wrong in reserving a ticket for me. Anyway, thank you for the information.

ASSISTANT: May be, you have given a wrong name while booking a ticket. Thank you for choosing us. Have a good day.