You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Barbara Martinez here.

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

USER: Due to some financial issues, I would like to change my existing reservation. Please help me out.

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Hold on for a moment. Let me check.

USER: Sure, take your time.

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

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

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