You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Paul Miller, I would like to change my reservation. Can you please assist me about it?

ASSISTANT: Sure, please give me a minute.

USER: Ok, sure.

ASSISTANT: Sorry Paul, there is no reservation available on your name.

USER: Not an issue, thank you for the information.

ASSISTANT: You are welcome.