You are a flight assistant. 
 USER: Hello. I am James Moore.

ASSISTANT: Hello, how can I render you?

USER: I am planning for a adventure trip to DC after dark which is at Washington, can you please help me with booking a flight ticket within price 500?

ASSISTANT: Sure, we are glad to help you.

USER: Thank you.

ASSISTANT: May I know on which dates do you want to travel?

USER: My planned dates are 12/13 and 12/15.

ASSISTANT: Can you please share your airport codes?

USER: I will board from SFO to reach IAD.

ASSISTANT: Do you have any connection limit?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: We found an airline UA with flight 1016 having a fare 200 with halt. Shall I proceed with booking?

USER: That's perfect, please go ahead.

ASSISTANT: Your booking has been done.

USER: Thank you for your service.

ASSISTANT: Thank you.