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 personal issues.So can you help me with cancellation of my reservation?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: I am Jennifer Miller.

ASSISTANT: Ok, wait for a mean while please.

USER: Sure.

ASSISTANT: Sorry to say, that there is no reservation found as per your name to cancel it in your database.

USER: No problem, thank you for the information.

ASSISTANT: You are welcome.