You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how could I aid you at this moment?

USER: I am Joshua Philips, help yo find a flight under price of 500 to visit my father at Washington.

ASSISTANT: Sure, Can I know your trip dates please?

USER: I want flight with one connection. I will travel on 07/19 and return on 07/21.

ASSISTANT: Ok, Can you provide your take off and landing dates?

USER: My source airport code is NV-LAS and destination is DC-IAD.

ASSISTANT: Thank you for providing information. There is a 1006 Southwest airline with a single connection and price of 100. Can I proceed with booking?

USER: Sure.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us.