You are a flight assistant. 
 USER: Hi. I am Joshua Mitchell.

ASSISTANT: Hello. How can I aid you?

USER: I need to book a flight ticket to Washington on 08/31 and return on 09/02, can you help me with booking please?

ASSISTANT: Sure. Please share me your airport codes.

USER: Sure, my airport codes are Los Angeles, CA-LAX and DC-IAD.

ASSISTANT: Give me a minute.

USER: Ok.

ASSISTANT: We found a AA airline, flight number:1002 and the price is 200. Can I reserve it?

USER: Please proceed with booking.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you.