You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you at this moment?

USER: I am looking for a flight from ORD to DCA, can you please help me in booking?

ASSISTANT: Sure, I will help you with that. Can you please mention your preferable travel dates?

USER: My travelling dates are July 14 and July 16.

ASSISTANT: May I know your name for further process?

USER: My name is Paul Gonzalez.

ASSISTANT: Do you need any specific depart and arrival time for this trip?

USER: No, thanks for asking.

ASSISTANT: Do you have any another specifications?

USER: I prefer economy class.

ASSISTANT: Ok, please hold on a moment.

USER: Sure.

ASSISTANT: Delta airline flight available with connection limit 1 and fare is 200, shall I confirm this economy class flight?

USER: Please proceed.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1020.

USER: Thank you for booking.

ASSISTANT: You are welcome Paul Gonzalez.