You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: I need to attend a seminar at Washington, can you help me to book a flight ticket from DEN to DCA?

ASSISTANT: Sure, could I have your trip dates, please?

USER: My travel dates are July 28 and July 30.

ASSISTANT: Do you have any specifications?

USER: I prefer connecting flight for this trip.

ASSISTANT: May I know your good name to proceed further?

USER: I am Donna Campbell.

ASSISTANT: Ok, please wait for a minute.

USER: Sure, take your time.

ASSISTANT: We found a connecting flight 1012 from American Airlines with a fare of 100. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thank you.

ASSISTANT: Thank you for opting us.