You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Patrick Wilson. I need to cancel my recent reservation due to postpone of my interview. Could you please help me in doing that?

ASSISTANT: Sure, please wait a minute.

USER: Ok.

ASSISTANT: There is no reservation with your name.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us.