You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Christine Miller. I am planning to watch a live food ball match at Chicago, help me in booking my flight ticket with one halt.

ASSISTANT: Sure, let me know when are you travelling.

USER: I would like to start on 10/08. My return date is 10/10.

ASSISTANT: Can you provide me your airport codes?

USER: My airport codes are from CO-DEN to IL-ORD.

ASSISTANT: Ok, There is an AAa airline with flight number 1015 available for you. Shall I proceed?

USER: Your flight has been confirmed.

ASSISTANT: Your booking has been done.

USER: Thank you.

ASSISTANT: Thank you for opting us.