You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Anthony Walker here.

ASSISTANT: Walker, how can I help you?

USER: I want to meet my friends in Washington and also planned to visit nearest places. Can you please help me for booking the flight ticket?

ASSISTANT: Could you please tell me your trip dates?

USER: My departure date is 08/13 and return date is 08/15.

ASSISTANT: Please mention your airport codes.

USER: My airport codes are from IAD to DCA.

ASSISTANT: Please wait for a moment.

USER: Ok, I will wait.

ASSISTANT: Flight-1005 of Southwest airlines is available for you with 1 connection.

USER: If the price limit is 500, then proceed for booking the flight ticket.

ASSISTANT: Your ticket is confirmed with price 100.

USER: Thanks for helping me.

ASSISTANT: You are welcome.