You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Due to sudden health issue, I am not able to travel in a flight. So, I would like to cancel my reservation. Can you please help me out with that?

ASSISTANT: Sure, may I know your good name please?

USER: Thank you for accepting my request, I have done my reservation on the name of Jacob Jackson.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name in our database to cancel.

USER: Oh! I think the ticket was not booked properly while I am booking. Anyway, thank you for the information.

ASSISTANT: You are most welcome.