You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. Can you please tell me how may I guide you?

USER: Can you please help me in cancel my recent reservation?

ASSISTANT: Sure, I am happy to help you with the ticket cancellation.

USER: Thank you.

ASSISTANT: Can I know on which name you have reserved your past ticket?

USER: Helen Edwards.

ASSISTANT: Ok, please allow me sometime to check your ticket status.

USER: Sure.

ASSISTANT: I am really sorry to inform you that, there is no active ticket booking under your name in our database to cancel the ticket.

USER: Ok , not an issue. Thank you.

ASSISTANT: My pleasure, thank you for consulting us.