You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I assist you?

USER: I am James Gonzalez. I raise a issue on human rights. And I got a call form human rights commission to attend a meeting.

ASSISTANT: Ok.

USER: Can you please book a flight ticket for me to Denver, DEN?

ASSISTANT: Sure, may I know your travelling dates, please?

USER: My travelling dates on 04/27 to 04/29. Price limit should not cross 1000.

ASSISTANT: Thank you giving your dates, may I know your origin airline code?

USER: My Origin point is Washington, DCA.

ASSISTANT: We found a flight on your details with airline UA, flight number: 1017. Shall I proceed for booking?

USER: Ok, please proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you choosing us. Have a nice day.