You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Stephanie Carter. I want to cancel my reservation, can you help in that?

ASSISTANT: Sure Carter, please give me a moment to check.

USER: Ok.

ASSISTANT: Sorry Carter, there is no reservation available on your name.

USER: That's not a issue, may be my brother has cancelled. Thank you for your help.

ASSISTANT: You are most welcome Carter.