You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you help me in changing my existing reservation?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your good name to proceed further?

USER: I am Eric Baker.

ASSISTANT: Please wait for a while. I will check and revert you.

USER: Sure.

ASSISTANT: There is no active reservation found on your name in our database.

USER: Its ok, thank you.

ASSISTANT: Thank you for availing us.