You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you today?

USER: I am Jack white, I book a ticket to Oakland to visit Magic Land but due to mu bad health I can not travel. Can you cancel my ticket?

ASSISTANT: Sure, please wait I will check the reservation list and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, no reservation was found on your name in our database.

USER: Thank you for the details.

ASSISTANT: Thank you for choosing us.