You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Jason Clark. I want  to cancel my reservation, due to sunned change in climate. Can you help in that?

ASSISTANT: Sure, please wait a moment, I will check and get back to you.

USER: Ok.

ASSISTANT: There is no reservation on your name.

USER: Oh! That's fine.

ASSISTANT: Thanks for choosing us.

USER: Thank you for your information.