You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for the day?

USER: I want to travel from DCA to HOU for a business conference, can you please check is there any flights available between those locations?

ASSISTANT: Sure, may I know your travel dates?

USER: I am planning to leave on Dec 28 and please book my return ticket on Dec 30.

ASSISTANT: Do you need any stopover in between your journey?

USER: Yes, I need a stop over.

ASSISTANT: Any other specifications to be met?

USER: No.

ASSISTANT: May I know your name?

USER: Sure, my name is Jason Hall.

ASSISTANT: Ok, please wait a minute.

USER: Sure, take your time.

ASSISTANT: We found an airline Southwest with flight 1019 having a fare 100 with stopover.

USER: I am ok with this flight, you can proceed with booking now.

ASSISTANT: Your booking has been processed.

USER: Thank you for your assistance.

ASSISTANT: Thank you.

USER: Welcome.