You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I need to cancel my reservation due to some changes which are made by my brother.. Can you please help me in cancellation?

ASSISTANT: Sure, we are here to help you. May I know your good name please?

USER: Christine Young here.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, there is no active reservation on your name to cancel.

USER: Not a problem, thank you for searching my ticket.

ASSISTANT: Thank you for choosing us.