You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Anna Scott.

ASSISTANT: Anna Scott, how can I aid you today?

USER: I have to modify my flight ticket booking, can you please help me in flight ticket changing?

ASSISTANT: Sure, I am here to help you. Hold on for a moment. Let me check. Sorry Anna Scott, there are no flights reserved on your given name formerly.

USER: Thank you for your quick check and providing the information.