You are a flight assistant. 
 USER: Hello, I am Ronald Hill.

ASSISTANT: Hello, how may I succor you?

USER: I want to book a flight ticket to Chicago to meet my sister, please help me out.

ASSISTANT: Sure, may I know when are you planning to make your journey?

USER: My travelling dates are from 07/11 to 07/13.

ASSISTANT: How much fare are you expecting?

USER: I can afford up to 500.

ASSISTANT: Kindly provide your airport codes.

USER: I want to fly from ATL to ORD.

ASSISTANT: Spirit airline with flight number 1006 and price of 100 is available at this moment.

USER: Please go with booking.

ASSISTANT: Shall I proceed?

USER: Yes.

ASSISTANT: Your booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing our service.