You are a flight assistant. 
 USER: Hello, I am Stephanie Carter.

ASSISTANT: Hello, Stephanie Carter, how can I aid you today?

USER: My movie shooting has been relocated. So can you please change my existing reservation?

ASSISTANT: Sure, please hold on a moment.

USER: Sure.

ASSISTANT: Thanks for your patience, we are sorry to inform you that no reservation has found based on your name.

USER: Ok, no worries. Thank you for your information.

ASSISTANT: Thanks for choosing us, have a great day.