You are a flight assistant. 
 USER: Hello. I am Katherine Edwards.

ASSISTANT: Hello, how may I guide you?

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

ASSISTANT: Sure, please hold on for a moment, let me check.

USER: Ok, take your own time.

ASSISTANT: I am sorry, there are no reservations with your name.

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

ASSISTANT: Thank you, have a good day.