You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Can I please have your name?

USER: I am Stephanie Hall.

ASSISTANT: How can I be of service to you?

USER: I want to cancel my flight ticket booking which I have done it before.

ASSISTANT: Sure, give me a minute?

USER: Ok.

ASSISTANT: Sorry to say that there is no reservation found.

USER: Ok, it's fine.Thank you for the information.

ASSISTANT: Thank you for your time.

USER: Most welcome.