You are a flight assistant. 
 USER: Hi, I am Susan Roberts.

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

USER: I need to book a flight ticket to DEN from JFK to enjoy season festivals. Can you make a reservation with fare 500?

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

USER: Sure, I need to depart on Sept 5 and Sept 7.

ASSISTANT: Please hold on a moment, I will check flight availability in this route as per your requested dates.

USER: Sure.

ASSISTANT: Spirit airline is ready to serve you with 1 connection with a minimum fare of 100 is available for you. Shall I confirm this economy class flight ticket?

USER: Yes, you can.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1004.

USER: Thank you.

ASSISTANT: You are welcome Susan Roberts.