You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I have reserved a ticket to meet 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 cancel my reservation?

ASSISTANT: Sure, may I know your name?

USER: Sure, I am Paul Clark.

ASSISTANT: Wait a minute.

USER: Sure.

ASSISTANT: We found your reservation and it has been cancelled successfully.

USER: Ok, Thank you.

ASSISTANT: Thank you for reaching us.