You are a flight assistant. 
 USER: Hello. Myself Stephanie Evans.

ASSISTANT: Hello, how can I help you today?

USER: I am going to provide a training to my Washington branch on 12/20, for that I need to book a flight ticket with single connecting.

ASSISTANT: Ok, I will help you in that.

USER: Thank you.

ASSISTANT: May I know when you are planning to return?

USER: I will be back on 12/22.

ASSISTANT: Kindly, share your airport codes of trip?

USER: It's a round trip so my airport code is Washington, DC-DCA.

ASSISTANT: Please ,wait for a while.

USER: Sure.

ASSISTANT: I am here to inform you that, there is a flight available with AA airline, flight number 1004 with fare 100 and a lay by. Shall I proceed to confirm?

USER: Please proceed.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for contacting us.