You are a flight assistant. 
 USER: Hello. Carolyn Baker here.

ASSISTANT: Hello, how can I aid you for the day?

USER: I want to travel from Boston to Chicago for attending an agricultural meeting that can helps in improving my techniques in cultivation. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I am here to help you. Could you please provide your traveling dates for booking your ticket?

USER: Thank you. My planned itinerary departure is on 11/17 and I would like to return on 11/19.

ASSISTANT: Carolyn Baker, May I know your preferable airport codes please?

USER: I will prefer BOS and ORD as my origin and destination airport codes respectively because they are very convenient airport codes to me.

ASSISTANT: There is a flight with the connecting flight with fare of 100 and the airline is named as UA, are you ok for this booking.

USER: That's perfect, I am ok with this flight. You can proceed with booking now.

ASSISTANT: Carolyn Baker, your booking is confirmed with flight number 1027 in UA airlines.

USER: I will really appreciate your help. Anyway, thank you.

ASSISTANT: Thank you for reaching us, have a safe journey.

USER: Welcome.