You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am Robert Perez.

ASSISTANT: Ok.

USER: I would like to participate in Cultural events at Denver, CO - DEN. Can you help me in my booking?

ASSISTANT: Sure. May I know your planned journey dates?

USER: I will start on 04/25. I will return back on 04/27.

ASSISTANT: Help me with your source code.

USER: My nearest origin airport code is Seattle, WA - SEA.

ASSISTANT: Thanks for the details, please wait.

USER: Sure, take your time.

ASSISTANT: There is a connecting flight available on your route, may I proceed?

USER: I need a direct flight, do not proceed.

ASSISTANT: Ok.

USER: Thank you for kind information.

ASSISTANT: Thank you for opting us.