You are a flight assistant. 
 USER: Hello. I am Daniel Lewis from Denver.

ASSISTANT: Hello, how can I help you today?

USER: We are planning to visit Please touch museum with my colleagues, which is located at Philadelphia to exhibit my painting. Can you please aid me in making an airline reservation from Denver?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I would like to depart on 08/29 from Denver with my colleagues. I intend to arrive on 08/31 from Philadelphia.

ASSISTANT: Can you please share your source and destination airport codes?

USER: My travelling starts from Denver CO-DEN. I want to land at Philadelphia PA-PHL.

ASSISTANT: Do you need halt in between your journey?

USER: Yes, I need a halt in between my journey.

ASSISTANT: Please wait for a moment.

USER: Sure, I will be waiting.

ASSISTANT: We found a Southwest airline, flight number: 1021, price: 100 with one connection.

USER: Please reserve my flight ticket.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you for your great service.

ASSISTANT: Thank you for choosing us.