You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I want to attend a Seminar in Chicago. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, We are here to help you. Can I know your travelling dates?

USER: My travelling dates are Oct 25 and Oct 27.

ASSISTANT: Please share me your airport codes.

USER: My airport codes are DCA and ORD.

ASSISTANT: May I know your name?

USER: Kevin Moore.

ASSISTANT: Do you need any break?

USER: I prefer single connecting flight.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: We found a direct flight with an Frontier airlines, flight number:1005.

USER: Please proceed for booking the flight ticket.

ASSISTANT: Your flight ticket has been reserved with an economy class.

USER: Thanks for helping me.

ASSISTANT: Thank you for reaching us.