You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I planned to meet my friend in ATL, can you please help me to book a flight ticket from SEA?

ASSISTANT: May I know your travel please?

USER: I prefer to travel on Dec 12 and Dec 14.

ASSISTANT: May I know your name please?

USER: I am Barbara Young.

ASSISTANT: Do you have any connection preferences?

USER: I prefer to travel in a connecting flight.

ASSISTANT: Do you have any timing concern?

USER: No.

ASSISTANT: Is there any other concern from your side?

USER: I would like to travel in economy class.

ASSISTANT: I will help you with that. Sorry,Barbara Young no flights found as per your preferences.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for choosing us.