You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: I would like to cancel my reservation due to sudden health issue, can you please help me out with that?

ASSISTANT: Sure, May I know your name?

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

ASSISTANT: Please wait a minute.

USER: Sure, take your time.

ASSISTANT: Sorry, No reservation found on your name.

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

ASSISTANT: Thank you for opting us.