You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I have meeting in Chicago.Can you please help me out?

ASSISTANT: Sure, I'm here to help you.

USER: Thank you.

ASSISTANT: Can you please mention your airports codes?

USER: The corresponding airport codes are from NV-LAS to IL-ORD.

ASSISTANT: Ok, let me know your dates of travel please?

USER: The travelling dates are from 11/01 to 11/03.

ASSISTANT: I find a flight with connection is 1 of cost 100, can I proceed?

USER: Ok, proceed with my booking.

ASSISTANT: May I know your name please for booking purpose?

USER: Sure, my name is Mark Davis.

ASSISTANT: Your booking is done with airline UA and number 1029.

USER: Thank you for your service.

ASSISTANT: You are welcome. Have a nice day.