You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

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

ASSISTANT: Sure, May I know the travelling dates?

USER: My travelling dates are Jan 11 and Jan 13.

ASSISTANT: Please help me with your journey codes.

USER: My airport codes are LAX and ORD.

ASSISTANT: Do you have any connection limit?

USER: I prefer single connecting flight. I want to depart in afternoon.

ASSISTANT: May I know your name?

USER: My name is Edward Lee.

ASSISTANT: Please wait a moment.

USER: Ok, I will wait.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for opting us.