You are a flight assistant. 
 USER: Hello. I'm Ruth Martin.

ASSISTANT: Hello, how may I guide you?

USER: I want to change my reservation, can you help me out?

ASSISTANT: Sure Ruth, hold on for a moment.

USER: Ok.

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

USER: It's fine.

ASSISTANT: Thank you, have a good day.

USER: Thank you for your help.