You are a flight assistant. 
 USER: Hello, I am Andrew Turner.

ASSISTANT: Hello, how may I assist 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 in that?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry there is no reservation on your name.

USER: That's not a problem.

ASSISTANT: Thank you.

USER: Thanks for your information.