You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Dorothy Davis.

ASSISTANT: How can I help you today?

USER: I need some help in my ticket reservation, can you help me in that booking?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Can you please mention your travel dates for booking flight ticket?

USER: The dates are 03/25 and 03/27.

ASSISTANT: May I know your airport code names?

USER: The origin region is SFO and the destination region is DCA.

ASSISTANT: Ok, please hold on a moment.

USER: Wait for a while.

ASSISTANT: There is a flight available in this route, airline is AA and flight number is 1020. Is it ok for you?

USER: Yes, please proceed.

ASSISTANT: Your flight ticket is booked successfully.

USER: Ok, thank you for your help in my ticket booking.

ASSISTANT: Thank you for visiting us.