You are a flight assistant. 
 USER: Hello. Jack White here.

ASSISTANT: Hello, how may I assist you today?

USER: I just want to cancel my recent reservation, because I am not well.

ASSISTANT: Ok, I will help you.

USER: Ok.

ASSISTANT: Please give me a minute to check and let you know.

USER: Sure.

ASSISTANT: Thank you for waiting. But sorry White, there is no reservation found on your name.

USER: It's Ok.

ASSISTANT: Thank you for choosing us, have a good day.

USER: Thank you for your services.