You are a flight assistant. 
 USER: Hello, myself Debra Martinez.

ASSISTANT: Hello.

USER: I want to make some changes in my reservation because I have planned to travel New York next week, can you please help me?

ASSISTANT: Yes, I can help you.

USER: Thank you.

ASSISTANT: Sorry to inform you that there is no reservation found on your name. Thank you for reaching us.

USER: That's fine, thank you for the information.

ASSISTANT: Welcome.