You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Anna Green. I need to amend my reservation, can you help me out?

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: Sorry Anna, there is no active reservation found with your name in our records.

USER: That's ok, no problem. Thank you for your information.

ASSISTANT: My pleasure.