You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER:  I am Paul Lewis want to meet my friends at DC-IAD from GA-ATL. Can you book a ticket?

ASSISTANT: Sure, please help me with your travelling dates?

USER: My travel dates are 02/26 and 02/28.

ASSISTANT: There is a connecting flight with price 100, Can I proceed?

USER: Ok, you can proceed.

ASSISTANT: Your booking is done with flight 1009.

USER: Thank you for booking.

ASSISTANT: Welcome.