You are a flight assistant. 
 USER: Hi. I am Ryan King.

ASSISTANT: Hello. How can I help you King?

USER: I want to participate in foot ball tournament at Washington. Can you please book a ticket in a direct flight?

ASSISTANT: Sure, I'll be glad to help you. Can you please tell your travelling locations that your preferred to make a trip?

USER: I need to depart from CO - DEN and return from DC - IAD.

ASSISTANT: When would you like to travel?

USER: I would like to board on 09/28 and return on 09/30.

ASSISTANT: Southwest airline is available with 1 connection and the price is just 200.

USER: Please book this.

ASSISTANT: Sure. Your reservation is confirmed with flight 1020.

USER: Thanks for your assistance.

ASSISTANT: Thank you and have a nice day.