You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I would like to cancel my reservation, please help me out.

ASSISTANT: Yes, I can help you.

USER: Thank you.

ASSISTANT: Can I know your name for checking your previous reservation?

USER: My name is Carolyn Moore.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for contacting us.