You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am planning to visit Atlanta, will you help me in booking the flight ticket from DCA to ATL?

ASSISTANT: Can I know your travelling dates?

USER: My preferable journey dates are Nov 16 and Nov 18.

ASSISTANT: Do you have any preference?

USER: I need a flight with single connection.

ASSISTANT: Let me know your name.

USER: Myself Virginia Hall.

ASSISTANT: Found ticket with Delta airlines for price 200 having flight number 1004.

USER: Sure, you can proceed with the booking.

ASSISTANT: Ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you.