You are a flight assistant. 
 USER: Hello, Anna Evans here.

ASSISTANT: Hello, how may I aid you?

USER: I am planning to visit New York to start my business and get back to Washington, can you please book me a ticket on this route?

ASSISTANT: Sure, may I know your airport codes please?

USER: My origin airport code is DCA and destination airport code is EWR.

ASSISTANT: Ok, now may I know your travel dates please?

USER: My preferable journey dates are from 08/25 to 08/27.

ASSISTANT: Ok, please wait for a moment.

USER: Sure, take your own time.

ASSISTANT: Thanks for waiting. I have found UA airlines with one connection.

USER: Please book my ticket with this airlines.

ASSISTANT: Your flight ticket has been confirmed now with flight number 1007.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you.