You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me in changing my reservation as my meeting got postponed?

ASSISTANT: Sure, I am here to help you. May I know your name to proceed further?

USER: I am Catherine Nelson.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Thank you for your time, we did not find any reservation on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.