You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Would it be possible for you to change my reservation, which I have done with my name?

ASSISTANT: Sure, I am here to assist you. May I know your name to proceed further?

USER: My name is Jeffrey Miller.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, There was no reservation found on your given name.

USER: No problem, thank you for your time.

ASSISTANT: Thank you for choosing us.