You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you?

USER: I would like to cancel my reservation which I have done to spend a free time with my Nephew but unfortunately my sister left that particular place. Can you cancel my ticket?

ASSISTANT: Sure, may I know your name please?

USER: I am Christopher Rodriguez.

ASSISTANT: Christopher, we did not found any reservation with your name in our records.

USER: Ok, no problem with that, thank you for your hand help.

ASSISTANT: You are welcome.