You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I address you?

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

ASSISTANT: Sure, will you please let me know your name?

USER: Thank you for accepting my request, I had reserved it on the name of Nancy Campbell.

ASSISTANT: Ok, please allow me a minute to check the current status and revert you.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting, there is no reservation found active under your name in our data base.

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

ASSISTANT: Thank you for choosing us.