You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Nicole Martinez.

ASSISTANT: Nicole Martinez, how can I aid you today?

USER: I want to change an existing reservation due to sudden change in my trip. Can you help me?

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

USER: Thank you. Ok.

ASSISTANT: Sorry Nicole Martinez, there are no flights reserved on your given name formerly.

USER: No issue. Thank you.

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