You are a flight assistant. 
 USER: Hello, I am Donald Phillips.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me to book a flight ticket from DCA - MCO?

ASSISTANT: Sure, please share your journey dates?

USER: My journey dates are 12/18 to 12/20.

ASSISTANT: Do you have any specifications?

USER: My price limit is 200. I need a halt.

ASSISTANT: We found a flight in couple of connections, shall I proceed with the Delta airlines?

USER: Please proceed to book.

ASSISTANT: Ok, your ticket has been confirmed with flight number is 1000.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.