You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: As I am scientist, I got an invitation from Washington institute of arts to give a speech. Can you do the reservation?

ASSISTANT: Ok, I can help you. Can I know your airport codes?

USER: My airport codes are PHL-DCA.

ASSISTANT: When would you like to travel?

USER: Dates are 12/03 and 12/05.

ASSISTANT: May I know your name?

USER: Jeffrey Robinson here.

ASSISTANT: We found a AA airline, flight number:1011 and the price is 300. Can I proceed it for booking?

USER: Go ahead.

ASSISTANT: Your flight ticket has been confirmed. Thank you for contacting us.

USER: Thank you so much.