You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hi. How can I help you?

USER: I have already reserved my ticket, but right now I want to cancel that reservation. Can you help me?

ASSISTANT: Sure, please provide me your details.

USER: I am James Lewis.

ASSISTANT: I am sorry I cannot find any reservation on your name.

USER: It's ok.

ASSISTANT: Thank you.

USER: Thank you for your good information.