You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Benjamin Gonzalez here. My plans have been changed, so could you please change my recent reservation.

ASSISTANT: Sure, I am here to help you. Hold on for a moment. Let me check.

USER: Sure, take your time.

ASSISTANT: Sorry Benjamin Gonzalez, there are no flights reserved on your given name formerly.

USER: No issue, Thank you for the information.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.