You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Gregory Garcia.

ASSISTANT: How can I assist you today?

USER: I am planning to visit my cousin's home at DCA. Can you please help me out?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: These are my travelling dates are 04/17 and return back on 04/19.

ASSISTANT: Please provide your source airport code.

USER: My nearest source airport code is ORD.

ASSISTANT: Please give me a moment.

USER: Make sure my connection limit is 1. Sure.

ASSISTANT: There is a flight with price 100 and the connections 1 is available.

USER: Yes, you can book it.

ASSISTANT: Your ticket is booked. The flight number is 1012 and the airline is Southwest.

USER: Thank you for your service.

ASSISTANT: Welcome, have a great day.