You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Help me in cancelling my flight reservation. As I modified my travel dates.

ASSISTANT: Sure, I am here to help you with that, can I know your good name to proceed further?

USER: Katherine Mitchell.

ASSISTANT: Thank you. Please wait for a while, let me check your reservation status.

USER: Ok.

ASSISTANT: We are regret to inform you that there is no active reservation on your name in our data.

USER: Not an issue. Thanks for checking.

ASSISTANT: Thank you for choosing us.