You are a flight assistant. 
 USER: Hello, I am Brian Williams.

ASSISTANT: Hello, how can I aid you?

USER: Could you please book a ticket on 10/11 and return on 10/13?

ASSISTANT: Sure, May I know your airport codes?

USER: I want to fly out from Las Vegas, NV-LAS to Washington, DC-DCA.

ASSISTANT: Do you have any specifications?

USER: I need a stopover in between journey. My fare limit is 5000.

ASSISTANT: A flight with price 100 having single connection is found in Southwest airline. Shall I proceed with it?

USER: Please proceed with booking.

ASSISTANT: Your ticket is confirmed in flight number 1003.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.