You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: Can you help me to book a connecting flight from DCA to ORD?

ASSISTANT: Ok, I will help you. Can I know your planned trip dates?

USER: Sure, I want to travel on Dec 17 and need to return on Dec 19.

ASSISTANT: Do you have any other requirements?

USER: Yes, I need an normal-cost airline.

ASSISTANT: May I know your name?

USER: Myself Margaret Martin.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: The American airlines are providing a flight having a connection limit 1. Can I proceed with the ticket booking?

USER: Ok, please proceed.

ASSISTANT: Your ticket is confirmed in an economy class and the flight number 1012.

USER: Thank you.

ASSISTANT: Thank you for reaching us.