You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I want to book the flight ticket from AUS to IAD. Can you please help me?

ASSISTANT: Please let me know your dates of journey.

USER: My travel dates are AUG 12th and AUG 14th.

ASSISTANT: Ok, please can I know your specifications?

USER: I would like to depart in the afternoon. I prefer to travel in economy class.

ASSISTANT: Ok, please let me know the if you need a connecting flight.

USER: I need a single connection.

ASSISTANT: Do you need anything else for the journey?

USER: No.

ASSISTANT: Ok, there is a flight ticket available at your location with 1 connection limit for the fare 200 and the airlines is Southwest.

USER: Please proceed.

ASSISTANT: Ok, the flight 1004 is available for which the flight ticket is booked and the class is economy.

USER: Thank you for the help.

ASSISTANT: Thank you for choosing our agency, have a safe journey.