You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Would it be possible to change my reservation to new travel dates?

ASSISTANT: Sure, may I know your good name please?

USER: Ok, I am Amanda Rodriguez.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name in our database to change.

USER: That's ok, thanks for checking.

ASSISTANT: Thank you for approaching us.