You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

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

ASSISTANT: Sure, I will help you. May I know your planned trip dates please?

USER: I have planned to travel on Dec 12th and return on Dec 14th.

ASSISTANT: Can I have your name please?

USER: Daniel Anderson.

ASSISTANT: Do you need a connecting flight?

USER: I prefer connecting flight.

ASSISTANT: May I know your other specifications?

USER: No, thanks.

ASSISTANT: I found an economy class in Delta airlines with fare 100 and it is a direct flight. Can I book your ticket?

USER: Ok, please book this ticket.

ASSISTANT: Ok, your booking is confirmed with flight number 1021.

USER: Thank you.

ASSISTANT: Thank you for approaching us.