You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Carol Robinson here. I was made a wrong reservation earlier in this week. So I want to cancel my reservation. Can you please help me for that?

ASSISTANT: Sure, I will help you.

USER: Ok.

ASSISTANT: Carol, no reservation has been found on your name.

USER: Anyway, thank you for the information.

ASSISTANT: Thank you for reaching us.