You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I would like to meet my childhood friend after a long time at Denver, so I would like to book a flight ticket. Can you help me?

ASSISTANT: Sure, I am glad to help you. Can you please share your journey dates?

USER: Sure. I am planning to start on 08/18 and spend 2 days with him and return back on 08/20.

ASSISTANT: Ok, may I know your airport codes please?

USER: My source and destination airport codes are PHL and DEN.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: I need 1 stopover in my journey.

ASSISTANT: I found a flight for you with AA airline and it costs you 200.

USER: Yes, make booking on the name Anthony White.

ASSISTANT: Your ticket has been booked with 1028 flight number.

USER: Thank you.

ASSISTANT: Welcome, thank you for reaching us.

USER: You are welcome.