You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I want to change my recent reservation, can you please help?

ASSISTANT: Sure, may I know your name for checking purpose?

USER: My name is Kathleen Lewis.

ASSISTANT: Thank you for your information, I have based on your request and it has that there is no reservation found for the user name.

USER: No problem, thank you.

ASSISTANT: You are most welcome and have a nice day.