You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I am Elizabeth walker, want to travel from ORD to DCA.

ASSISTANT: Sure, I will help you with that. Can you please mention your travel dates for booking flight ticket?

USER: My travelling dates are from 08/17 to 08/19.

ASSISTANT: Please hold on a moment, I will check flight availability in this route.

USER: Sure.

ASSISTANT: Based on your information, Southwest airline is ready to serve you with 1 connection with a minimum fare of 100 is available for you. Shall I proceed with this?

USER: Please proceed.

ASSISTANT: I have confirmed your flight ticket, flight number is 1000.

USER: Thank you.

ASSISTANT: You are welcome.