You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you?

USER: I want to book a flight ticket to Chicago with price under 200. Can you help me with it?

ASSISTANT: May I know your good name?

USER: My name is Joshua Hill.

ASSISTANT: Sure, please provide your travelling dates?

USER: Travelling dates are 12/02 and 12/04.

ASSISTANT: Kindly provide your journey codes.

USER: Airport codes are IAH-ORD.

ASSISTANT: We found a flight with number 1003 and UA as airline. The cost of the ticket is 200.

USER: Yes, you can proceed.

ASSISTANT: Your ticket is booked.

USER: Thanks for the help.

ASSISTANT: Thank you for availing us.