You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you at this minute?

USER: Can you find me a flight to Chicago on Sept 20?

ASSISTANT: Ok, I am glad to help you with that. Can I know your planned trip dates?

USER: I will fly on Sept 20 and return on Sept 22.

ASSISTANT: May I know your airport codes?

USER: My source point is IAH and my destination is ORD.

ASSISTANT: Can I know your good name?

USER: My name is Nancy Mitchell.

ASSISTANT: Is there any other requirements?

USER: I want my return flight in afternoon.

ASSISTANT: Ok, wait for a minute.

USER: Sure.

ASSISTANT: The United airlines are providing a flight having a connection limit 1 and the ticket fare of 700. Are you ok with this flight?

USER: Yes, it is fine for me.

ASSISTANT: I have confirmed your flight ticket in a business class and the flight number 1008.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us. Have a safe journey.