You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Can you please change my reservation?

ASSISTANT: Sure, I am here to change it. Can you please share your name?

USER: Brenda Hill here.

ASSISTANT: Ok, please stand by.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry we didn't find any reservation on your name.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for reaching us, have a good day.