You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I help you?

USER: Can you please help me to book a flight from ATL to DCA?

ASSISTANT: Sure, may I know your travelling dates?

USER: I want to travel on Mar 1 and need to return on Mar 3.

ASSISTANT: Can I know your other preferences?

USER: I need a flight with single connection.

ASSISTANT: Do you prefer any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: Richard Adams here.

ASSISTANT: There is a flight of United airline, flight number 1012 with the fare of 100.

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for choosing us.