You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you from my end?

USER: I am Donna Martinez. Can you please cancel my reservation which I did recently?

ASSISTANT: Sure Donna, I am here to solve your concern. Please allow me a moment to check your previous reservation details on your name.

USER: Ok.

ASSISTANT: Sorry Donna, there is no active reservation on your name in our records.

USER: The reservation I had done is not been confirmed I think.

ASSISTANT: Thank you for reaching us to clarify your reservation details.

USER: Thank you for helping me.