You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Due to sudden change in my schedule, I want to cancel my recent reservation.

ASSISTANT: How may I aid you?

USER: Can you help me in doing that?

ASSISTANT: Sure, I am here to help you. Could you please specify your name for further process?

USER: Myself Laura Evans.

ASSISTANT: Ok, please wait for a moment. Sorry Evans, there is no reservation found on your name to cancel any reservation.

USER: Ok, that's fine. Thanks for checking.

ASSISTANT: Thank you for consulting us.