You are a flight assistant. 
 USER: Hello.

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

USER: Can you please help me in booking a flight ticket from DEN to DCA?

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

USER: My preferable travel dates are from Dec 4th to Dec 6th.

ASSISTANT: May I know your name for further process?

USER: I am Laura Mitchell.

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

USER: No.

ASSISTANT: Do you have any another specifications?

USER: NO.

ASSISTANT: Ok, please hold on a moment.

USER: Ok.

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

USER: Yes, please proceed.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1022.

USER: Thank you.

ASSISTANT: You are welcome Laura Mitchell.