You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, may I know your name please?

USER: Sure, my name is Carol Allen.

ASSISTANT: How can I be of your help?

USER: I just want to cancel my reservation due to extension of my holidays. Can you be my help?

ASSISTANT: Sure, I am blissful to help you. Please wait for a second.

USER: Thank you. Sure.

ASSISTANT: Sorry, we did not find any reservation in your name to cancel your reservation.

USER: Ok, not an issue. Anyhow, thanks for the information.

ASSISTANT: Thanks for opting us, have a nice day. Hope to serve you again.