You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Could you assist me in cancel my recent reservation?

ASSISTANT: Sure, could you please tell me your name?

USER: I'm Carolyn Roberts.

ASSISTANT: OK. Give me a moment Carolyn.

USER: OK.

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

USER: OK. Thank you for information.

ASSISTANT: Thank you for reaching us.