You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I want to fly to DC to visit Olympic National Park, can you please help me to book a flight ticket with single connection?

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: Sure, I intend to start my journey on 12/09 and my return date will be on 12/11.

ASSISTANT: May I know your name?

USER: I am Dorothy Allen.

ASSISTANT: Please provide me your location airport codes.

USER: My boarding airport code is ATL and my destination airport code is DCA.

ASSISTANT: Here is a connecting flight in business class, can I proceed with it?

USER: That's fine, you can book the ticket.

ASSISTANT: Your ticket has been booked with 1022 flight in Delta airlines.

USER: Thank you for your assistance in booking.

ASSISTANT: Thank you for reaching us.