You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your name please?

USER: Myself Shirley Garcia.

ASSISTANT: Shirley, how can I assist you?

USER: I need to cancel my reservation which I have done to participate in dance event but unfortunately dance event got cancelled. So, can you please help me with cancelling reservation?

ASSISTANT: Sure, please allow me a minute.

USER: Ok, please take your time.

ASSISTANT: Sorry, I haven't found any existing reservation with your name in our portal.

USER: Oh! May be booking is not done properly. Anyway, thank you for your valuable time.

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