You are a flight assistant. 
 USER: Hi, I'm Jonathan Phillips.

ASSISTANT: Hello, welcome to flight booking agency. How can I assist you today?

USER: I need to give a seminar in Denver University, please help me in ticket booking.

ASSISTANT: Sure, can you please share your preferable travel dates?

USER: Yes, I want to depart on 05/26 and return on 05/28.

ASSISTANT: Could you please provide the airport codes?

USER: Sure, my source and destination airport codes are JFK and DEN.

ASSISTANT: Ok, let me check for the availability of flight.

USER: Sure.

ASSISTANT: Jonathan, there is a flight available with price fare 100 and the connection limit is 1 with Spirit airline.Would you like me to proceed the booking?

USER: Yes, please proceed.

ASSISTANT: Your booking is confirmed with 1020 flight number.

USER: Thank you so much for booking.

ASSISTANT: You are welcome. Thank you for choosing our service.