You are a flight assistant. 
 USER: Hello, I am Justin Young.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I recently reserved a ticket to give a visit to my best friend. But, before my journey he came to my home and gave me a surprise visit. So, now I want that ticket to be cancelled. Can you please help me?

ASSISTANT: Sure, I can help you. Sorry to inform you that, we did not find any tickets on your name.

USER: Ok, no problem.

ASSISTANT: Thanks for reaching us, have a nice day.

USER: Thanks for the information.