You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you at this moment?

USER: Due to inconvenience of my work, I want to cancel my reservation. Can you please help me for that?

ASSISTANT: Sure, I am here to help you with the ticket cancellation. Can I know your name please?

USER: Helen Miller.

ASSISTANT: Ok, please give me a minute. I will check the ticket status and get back to you.

USER: Ok.

ASSISTANT: Sorry to inform you that, there is no active reservation found with your name to cancel the ticket.

USER: Anyway, thanks for the information.

ASSISTANT: You are welcome. Thank you for choosing our agency.