You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I need to change my reservation which I have done to participate in dance event but unfortunately dance event got postponed to next month so can you please change my reservation?

ASSISTANT: May I know your name for checking your previous reservation status?

USER: Sure, my name is Timothy Anderson.

ASSISTANT: There is no previous reservation available on your name.

USER: It's ok.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Thank you for the information .