You are a flight assistant. 
 USER: Hi, I am Kevin Walker.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to visit Washington Central Library to gather some information to write a article, can you help me to book a flight ticket with single connection?

ASSISTANT: Sure, I am here to help you. Can I know your travel dates?

USER: I intend to start on 09/07 and my return date will be on 09/09.

ASSISTANT: Please share your travel airport codes also.

USER: My airport codes are from IL-ORD to DC-DCA.

ASSISTANT: Wait for a minute, let me check.

USER: Ok.

ASSISTANT: Delta airline is providing flight for you with price 100.

USER: That perfectly matches my schedule, please confirm my ticket.

ASSISTANT: Your ticket has been booked with flight-1013.

USER: Thanks for booking my ticket.

ASSISTANT: My pleasure.