You are a flight assistant. 
 USER: Hello, I am Kathleen Taylor.

ASSISTANT: Hello. What can I do to make your experience better with us?

USER: I would like to attend my father's retirement celebrations which is going to be held at Las Vegas on 03/12. For this reason I want to book a flight ticket. Will you help me in this?

ASSISTANT: Sure, I'm delighted to help you. Please mention when would you like to return?

USER: I intend to return on 03/13 and my journey starts on 03/11.

ASSISTANT: Kindly share your fare preference.

USER: I can afford up to 500 only.

ASSISTANT: Ok, can you please let me know your exact airport codes?

USER: Sure, my nearest airport source code is Philadelphia, PA - PHL and destination code is NV - LAS.

ASSISTANT: Do you need a stopover in between your journey?

USER: Yes, I need a halt in between my journey.

ASSISTANT: Thanks for sharing your travelling details, please give me some time I will check and let you know.

USER: Sure, take your time.

ASSISTANT: We found a Spirit airline matching your request with one connection and the price 100. Shall I continue with the booking?

USER: Yes, please proceed with the booking.

ASSISTANT: Your booking has been processed successfully with the flight number-1017.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us, have a nice day.