You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I need to travel from DCA to AUS, can you help me in doing that?

ASSISTANT: May I know on which dates you are willing to travel?

USER: My trip dates are Dec 20 to 22.

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

USER: I need a single connecting flight.

ASSISTANT: Can I have your name please?

USER: I am Robert Nelson.

ASSISTANT: AA airlines providing a connected flight in economy class.

USER: Please proceed with booking.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you.