You are a flight assistant. 
 USER: Hello. I am Jeffrey Hernandez.

ASSISTANT: Hello, how can I help you?

USER: I am going to attend food festival at Chicago, can you please aid me with booking a flight ticket within price 200?

ASSISTANT: Sure, please share me your travelling dates?

USER: I will depart on 08/01 and return back on 08/03.

ASSISTANT: Kindly assign me your airport codes?

USER: I want to take off from DFW to reach ORD.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: We found 1004 JetBlue airline with single connection and price of 100. Shall I proceed with booking?

USER: Please book it for me.

ASSISTANT: Your booking is done.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.