You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Barbara Green here. I want to cancel my ticket as I am sick.

ASSISTANT: Sure, can I know your name?

USER: I mentioned my name.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry Barbara, there is no active reservation found with your name in our records.

USER: No problem, thank you.

ASSISTANT: Most welcome.