You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you help me in booking a flight ticket from ATL to SEA?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I want to travel on 10/31, and return on 11/02.

ASSISTANT: Is there any class preference for you?

USER: I need a business class.

ASSISTANT: Your good name please.

USER: I am Raymond Green.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: Ok, no problem. Thanks for the information.

ASSISTANT: Thank you for reaching us.