You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help 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, please a minute, let me check and revert you.

USER: Ok.

ASSISTANT: There is no reservation found. Can you provide me your good name?

USER: I am Larry Hernandez. Thank you.

ASSISTANT: Thank you, for reaching us.