You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you for the day?

USER: Please book me a flight ticket from SEA to ATL to meet my family.

ASSISTANT: Sure, I am here to help you with that. Can you please share your planned travel dates?

USER: I have planned to travel on Dec 14th and return on Dec 16th.

ASSISTANT: May I know your name please?

USER: George Baker.

ASSISTANT: Would you like to travel in a connecting flight or in a direct flight?

USER: I prefer connecting flight with normal cost.

ASSISTANT: Do you have any other specifications?

USER: I want to return at evening time with business class.

ASSISTANT: There are no flights found on this route as per your travel dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us, have a great day.