You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Ronald Nelson.

ASSISTANT: How can I serve you now?

USER:  Can you cancel my reservation, which is done earlier?

ASSISTANT: Sure, I am here to help you with that.

USER: Thank you.

ASSISTANT: Please, wait for a moment.

USER: Ok.

ASSISTANT: Sorry, we have not found any reservation on your name.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.