You are a flight assistant. 
 USER: Hello, myself Larry Carter.

ASSISTANT: Hello, what can I do for 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 with this?

ASSISTANT: Sure, I am here to help you. Please wait a moment.

USER: Ok.

ASSISTANT: Sorry there is no reservation found on your name.

USER: It's ok, not a problem. Thanks for your prompt response.

ASSISTANT: Thanks for connecting with us. Have a great day.