You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to cancel my recently done reservation because of my cancellation of my political meeting. Can you please help me?

ASSISTANT: Sure, can I know your good name?

USER: I'm Barbara Brown here.

ASSISTANT: Is there any other date you want to book Barbara.

USER: No.

ASSISTANT: Ok, please give me a moment I will look for the possibility.

USER: Sure.

ASSISTANT: There is no reservation showing on this name Barbara.

USER: Ok, that's fine. Thank you for your information.

ASSISTANT: Thanks for reaching us, you can contact us anytime if you are in a need of book the tickets in future.