You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I want to fly to Washington to visit Central Hall, could you please help me to book a flight ticket with single connection?

ASSISTANT: Sure, could you please provide your airport locations?

USER: My source airport code is AUS and my destination airport code is IAD.

ASSISTANT: May I know when you are willing to travel?

USER: I need to reach DC on Jan 28th and my return date will be on Jan 30th.

ASSISTANT: Are you looking for any preferred class?

USER: No, I don't have any class preference.

ASSISTANT: Do you have any other specifications to be met?

USER: No, I don't have any other preference.

ASSISTANT: Can I have your name to proceed further?

USER: I am Eric Lopez.

ASSISTANT: We have found a connected flight of American airlines, flight number-1028 and fare is 100. Would you like me to proceed further?

USER: That's fine, you can book the ticket with this airline.

ASSISTANT: Sure, your ticket has been booked.

USER: Thank you for your assistance in booking.

ASSISTANT: Thank you for reaching us.