You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you?

USER: I want to change my existing reservation as my meeting was scheduled to other location.

ASSISTANT: Ok.

USER: Would you help me out in changing my reservation?

ASSISTANT: Sure, may I know your good name for further process?

USER: I am Stephanie Hernandez.

ASSISTANT: Thank you for providing your name, please hold on.

USER: Sure.

ASSISTANT: No reservation found on your name.

USER: Ok, no problem. Thank you for prompt response.

ASSISTANT: Thank you for reaching us, have a nice day.