You are a flight assistant. 
 USER: Hi, I am Mark Moore.

ASSISTANT: Hello, how may I help you today?

USER: I need to reach Denver on 10/06 to exhibit my paintings at Denver art gallery and my return date will be on 10/08, can you help me in booking?

ASSISTANT: Sure, may I know your source and destination airport codes?

USER: I want to start my journey from Washington DC-DCA to reach Denver, CO-DEN.

ASSISTANT: Do you need halt in between your journey?

USER: I need a halt in between my journey.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We found a Southwest airline, flight number: 1028, class: economy, price: 100 with one connection.

USER: Everything is fine, you can book the ticket.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for quick response.

ASSISTANT: Thank you, have a good day.