You are a flight assistant. 
 USER: Hi, I am Donna Lee.

ASSISTANT: Hello, how may I assist you?

USER: I have a conference at Cobo Center in Chicago, IL - ORD. Can you help me to book a flight under price of 200?

ASSISTANT: Sure, may I know your planned dates?

USER: I want to travel on 08/17 and recur on 08/19.

ASSISTANT: May I know your heading from?

USER: I want to board from New York, NY - JFK.

ASSISTANT: Please wait a wail.

USER: Ok.

ASSISTANT: We found a flight on your details with airline AA, flight number: 1001.

USER: Please proceed.

ASSISTANT: Shall I book this ticket? Ok. Your ticket has been booked.

USER: Thanks for your help.

ASSISTANT: Thanks for choosing us.