You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Kenneth Thomas.

ASSISTANT: Kenneth, how can I help you today?

USER: I want to cancel my reservation, because I got to know that the service of the Delta airlines is not good.

ASSISTANT: Ok, I will help you. Kenneth, I did not find any reservation with your name.

USER: That's ok, thanks for your information.

ASSISTANT: Anything else to help you.

USER: No.

ASSISTANT: Thank you for reaching us.

USER: Welcome.

ASSISTANT: Have a nice day.