You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a flight ticket from DFW to DCA, can you help me with booking please?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: Yes, my travelling dates are Feb 20 and Feb 22.

ASSISTANT: Do you require any stopovers in your journey?

USER: I need a direct flight.

ASSISTANT: Would you let us know if you have any other preferences?

USER: I want to return in the afternoon.

ASSISTANT: Please share your name.

USER: My name is Barbara Evans.

ASSISTANT: There is a flight with your requirement, airline is SouthWest Airlines with price 100 in economy class.

USER: Please proceed with booking.

ASSISTANT: Your booking is done and flight number is 1006.

USER: Thank you.

ASSISTANT: Thanks for reaching us.