You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you for today?

USER: Myself Cynthia Parker. I want to change my existing reservation, can you help me in that?

ASSISTANT: Sure, I will help you with that Parker.

USER: Thank you.

ASSISTANT: Sorry to say this Parker, there are no active reservations with your name to change.

USER: That's ok, no problem. It might went wrong while at the time of booking due to some technical issues. Thank you for the information.

ASSISTANT: You are welcome, thank you for reaching out here.