You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: My name is Scott Green. Can you please change my reservation details?

ASSISTANT: Glad to meet you Scott. Sure, I will help you with that.

USER: Thanks.

ASSISTANT: Please be hold on for a moment and I will check existing reservation status.

USER: Ok.

ASSISTANT: Sorry Scott, no reservation found under your name to change.

USER: It's ok, thank you for the information.

ASSISTANT: Most welcome. Thank you for reaching us.