You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: Can you change my reservation to new trip dates?

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

USER: Ok, I am Ryan Rodriguez.

ASSISTANT: Please wait for a moment.

USER: Ok, take your time.

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

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for reaching us with a query.