You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am planning to visit Denver, CO-DEN from CO-DEN. Can you book a flight for me?

ASSISTANT: Sure, can you please share your journey dates?

USER: I will fly on 08/25 and return on 08/27.

ASSISTANT: Do you need any halt in between journey?

USER: Yes, I need a halt.

ASSISTANT: Ok,  please wait. We found a connected flight of Southwest airline, flight number-1007 and fare is 200.

USER: Please proceed with booking on name of Dorothy Clark.

ASSISTANT: Sure, your reservation has been done.

USER: Thank you for helping me.

ASSISTANT: Thank you.