You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to attend a Seminar in Chicago. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, please provide your travelling dates.

USER: My travelling dates are Dec 01 and Dec 03.

ASSISTANT: Ok, May I know your journey airport codes?

USER: My airport codes are AUS and ORD.

ASSISTANT: Ok, Do you have any class preference?

USER: No.

ASSISTANT: Ok, Do you prefer direct flight or connected flight?

USER: I prefer single connecting flight.

ASSISTANT: Ok, Do you have any other preferences?

USER: No.

ASSISTANT: Thank you for providing details, we found a direct flight in 1007 Frontier Airlines with a fare of 200. Can I proceed for booking?

USER: Please proceed.

ASSISTANT: May I know your name for booking purpose?

USER: My name is George Lopez.

ASSISTANT: Your ticket has been booked.

USER: Thanks for helping me.

ASSISTANT: Thank you for approaching us.