You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you help me to cancel my reservation?

ASSISTANT: Sure. May I know your name?

USER: My name is Cynthia Carter. Do you find any thing?

ASSISTANT: Sorry Cynthia, there is no reservation found.

USER: Oh! that is fine.

ASSISTANT: Thank you.

USER: Anyway thank you for your support.