You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you now?

USER: I am looking to cancel the existing reservation because the planned trip got cancelled suddenly. Can you please aid me to cancel the ticket?

ASSISTANT: Sure, I am ready to help you with that.

USER: Thank you for accepting my request.

ASSISTANT: Can I have your good name please to check your reservation status?

USER: Sure, my name is Angela King.

ASSISTANT: Ok, please wait a moment.

USER: Ok, take your time.

ASSISTANT: Sorry Angela King, no reservation has found under your name to cancel.

USER: It's ok, not a problem with that. I think the ticket is already cancelled by my brother. Anyways thank you for checking.

ASSISTANT: Thank you for choosing us, have a good day.

USER: You are welcome.