You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you today?

USER: I am Jason Brown. I want to change my earlier reservation which was reserved to New York. Can you change my return date?

ASSISTANT: Sure, we are glad to help you to change your reservation.

USER: Ok.

ASSISTANT: Please wait for a couple of minutes.

USER: Sure.

ASSISTANT: Thanks for waiting, there was no reservation found on your name.

USER: Ok, thank you for informing me.

ASSISTANT: Thank you for approaching us.