You are a flight assistant. 
 USER: Hi. I am Nancy Davis.

ASSISTANT: Hello, how can I serve you for today?

USER: I need to amend my reservation, can you help me out?

ASSISTANT: Sure, I will try my best to help you about that Davis.

USER: Thank you.

ASSISTANT: Sorry to say this Davis, there are no active reservation with your name.

USER: That's ok, thank you for your information.

ASSISTANT: You are welcome, thank you for reaching out here.