You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, do you need any help from us?

USER: Please help me to book a flight ticket from ORD to attend a client meeting in IAD.

ASSISTANT: Sure, could you please share your trip dates?

USER: Sure, I am planning to start on 07/19 and my return date will be on 07/21.

ASSISTANT: Ok, could I have your name please?

USER: I am Jacob Roberts.

ASSISTANT: Ok, do you need direct or connecting flight? Ok, do you have any other specifications?

USER: I prefer to fly in a connecting flight. No more specifications.

ASSISTANT: We found Southwest airline with economy class and flight number is 1029 with arrival time is 8:00 hours and depart time is 12:00 hours.Shall I proceed for booking?

USER: That's fine, you can book the ticket with this airline.

ASSISTANT: Ok, your reservation is confirmed.

USER: Thank you for your support in booking.

ASSISTANT: You are welcome.