You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, May I know what kind of service you are expecting from us?

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 provide your name.

USER: I am Jerry Williams.

ASSISTANT: We apologize, but we do not have any reservation found with your name.

USER: Ok, Thanks for the information.

ASSISTANT: Thank you for availing us. Have a good day.