You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you at present?

USER: Owing to an emergency I have request you to cancel my reservation. Can you please help me out with that?

ASSISTANT: Sure, I am here to help you with cancellation.

USER: Thank you for accepting my request.

ASSISTANT: May I know your name?

USER: I have reserved it on the name of Rebecca Williams.

ASSISTANT: Ok, please wait.

USER: Sure, take your time.

ASSISTANT: Thanks for your time, there was no reservation found on your name to cancel it.

USER: Oh! I think the ticket was not booked due to server issue. Anyway, thank you for the information.

ASSISTANT: Thank you for availing our service.