You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I be your helping hand today?

USER: I want to cancel my reservation, can you help me in that?

ASSISTANT: Sure, I am here to help you. May I know your name please?

USER: I am William Wright.

ASSISTANT: Ok, please wait for a minute.

USER: Ok.

ASSISTANT: Thank you for waiting, no reservation was found on your name to cancel.

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing us.