You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you out?

USER: Please help me to book a flight ticket from ATL to SEA.

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Dec, 23 and Dec, 25 are my travel dates.

ASSISTANT: Can I know your name please?

USER: Emma Smith here.

ASSISTANT: Can I know your other specifications?

USER: I need to depart at afternoon time with single connection.

ASSISTANT: Sorry, there are no flights found.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for reaching us.