You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: George Robinson here, can you please book me a ticket to Chicago within price 500?

ASSISTANT: Sure, Kindly mention your journey airport codes.

USER: Sure, my preferable airport codes are IAD to ORD.

ASSISTANT: Ok, Can you please provide your depart date and return date?

USER: Sure, I will start on 08/31 and return back on 09/02.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Thank you for you time, we found a connecting flight in 1019 AA airline with price 100.

USER: Please go ahead with the booking.

ASSISTANT: Sure, your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.