You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

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

ASSISTANT: Sure, can you please specify me your dates of travel?

USER: My travelling dates are Oct 20 and Oct 22.

ASSISTANT: May I know your airport codes?

USER: My airport codes are DTW and ORD.

ASSISTANT: Can I know your connection limit?

USER: I prefer single connecting flight.

ASSISTANT: Let me know your name?

USER: My name is Stephanie Roberts.

ASSISTANT: There is a connecting flight 1000 of Southwest airlines, can I proceed?

USER: I want to return on afternoon, please check for it.

ASSISTANT: Yes, it is a afternoon flight.

USER: Please proceed.

ASSISTANT: Your booking is done.

USER: Thanks for helping me.

ASSISTANT: Welcome.