You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: Can you change my recent reservation to new travel dates?

ASSISTANT: Sure, may I know your name please?

USER: Sure, I am Betty Anderson.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that, there is no reservation found as per your name in our database.

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for reaching us with a query.