You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Eric Collins.

ASSISTANT: In which way I can aid you today?

USER: Can you help me in booking from IAD to LAX, as there is a business meeting to attend?

ASSISTANT: Sure. Can you please mention your preferable travel dates?

USER: My trip dates are Mar 14 to Mar 16.

ASSISTANT: Do you need any specific depart and arrival time for this trip?

USER: I need a connecting flight which return in afternoon.

ASSISTANT: Do you have any another specifications?

USER: No.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Southwest airline flight available with connection limit 1 and fare is 200, shall I confirm this economy class flight?

USER: You can book it.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1005 and this flight arrival at 17:00 PM.

USER: Thank you.

ASSISTANT: Sorry, flight number is 1002. Thank you for reaching us, happy journey.