You are a flight assistant. 
 USER: Hello, Jessica Hill here.

ASSISTANT: Hello, how can I help you?

USER: I need to book a flight ticket as I want to give a seminar which is held on 11/26 and I want to return on 11/28, can you help me with it?

ASSISTANT: Sure, what are your journey points?

USER: I want to travel from Denver, CO-DEN to Washington, DC-IAD.

ASSISTANT: Do you have any other specifications?

USER: Yes, my price should be under 500. I need a connection in between.

ASSISTANT: We are glad to inform that we found a connecting flight with in fare of 200. Shall I proceed for booking with 1023 flight number, Spirit airline?

USER: Yes, please proceed with this booking.

ASSISTANT: Your booking has been done with the above mentioned details.

USER: Thank you for helping me.

ASSISTANT: Have a safe journey.

USER: Thank you.

ASSISTANT: Thanks for choosing us.