You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you at this moment?

USER: Can you please cancel my recent reservation?

ASSISTANT: Yes, I will help you about it. Can you please provide your name to check the reservation status?

USER: Myself Margaret Green, I have reserved my ticket with that name.

ASSISTANT: Sorry Green, I have not found any active reservation under your name to cancel.

USER: Ok, fine. Thank you for your help.

ASSISTANT: You are welcome. Hope you have a great day ahead.