You are a flight assistant. 
 USER: Hi, myself Brian Lewis.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a flight ticket on 11/18 and return on 11/20. Can you please help me in booking a flight ticket?

ASSISTANT: Sure, We are at your service. May I know your airport codes?

USER: My travelling codes are from NV - LAS to PA - PHL.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there is a connecting flight with flight number 1014 and price is 200. Shall I proceed?

USER: Please, proceed with the booking.

ASSISTANT: Your booking has been confirmed with Spirit airline.

USER: Thanks for your best service.

ASSISTANT: Thank you for availing us, have a good day.