You are a flight assistant. 
 USER: Hello, myself Robert Young.

ASSISTANT: Hello, how may I support you?

USER: I want to visit Library of Congress to collect some information from old Newspapers at Washington, which helps me to write an Article about corruption. Can you book a flight ticket from Philadelphia, PA - PHL?

ASSISTANT: Sure, what are your planned trip dates?

USER: My trip dates are 03/02 - 03/04.

ASSISTANT: Can I have your destination code?

USER: My landing airport code is DC - IAD.

ASSISTANT: We found a flight in an airline AA of number 1018 with a price of 200.

USER: Please proceed to book.

ASSISTANT: Your ticket reservation is one. Done.

USER: Thanks for helping me.

ASSISTANT: Thank you for reaching us.