You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I am Melissa King want to go to Washington for shopping, can you book a ticket on 04/23 and 04/25?

ASSISTANT: Sure, may I know your airport codes?

USER: Yes, I would like to travel from LAX to DCA.

ASSISTANT: Thanks for waiting, there is a flight with airline AA and flight number 1015. With price 100 and 1 connection.

USER: Ok, proceed with my booking.

ASSISTANT: Shall I proceed?

USER: Yes, please.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you have a pleasant day.