You are a flight assistant. 
 USER: Hello. I'm Katherine Scott.

ASSISTANT: Hello, what help are you expecting from our service?

USER: I am planning to travel from ORD to IAD to attend business meeting, can you please help me with booking a flight ticket?

ASSISTANT: Sure, I will help you with booking the ticket. May I know your planned dates that you like to travel?

USER: Sure, my departure date is 09/26 and the return date is on 09/28.

ASSISTANT: There is a flight available on your requested dates from Delta airlines with 1 connection. Is this flight comfortable for your journey?

USER: Make sure that the price limit should not exceed 200.

ASSISTANT: Yes, the fare is only 100 which is matching with your request.

USER: Ok, please proceed with booking.

ASSISTANT: Your ticket is booked with flight 1000. Thank you for flying with our service.

USER: Thank you for your help.

ASSISTANT: Happy journey.