You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I be your helping hand?

USER: As I am a C.B.I officer, I need to solve a case at Houston, But unfortunately the case details have been sent to headquarters at Washington. Can you please help me to change my reservation?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your name to check reservation?

USER: Sure, I am James Moore.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thank you for your time. I am here to inform you that, there is no reservation found on your name.

USER: Ok, no issues.

ASSISTANT: Thank you for approaching us.

USER: Thanks for your help and support.