You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assess you at this moment?

USER: I am William Carter. I am planning to travel to JFK for year end shopping, can you help in finding a flight on 12/13?

ASSISTANT: Sure, I can help you in advance booking Carter. Could you please help me in providing your source region and return date?

USER: I want to takeoff the flight from OAK, and I want to return back on 12/15.

ASSISTANT: Wait for a while to search for the flights.

USER: Sure.

ASSISTANT: Thank you for being on hold. There is a ticket available in Frontier airlines with a ticket fare of 100, do you want me to confirm your ticket?

USER: I am ok with that flight, proceed for booking.

ASSISTANT: Your plane ticket is booked in 1023 flight number with your name. Have a nice day.

USER: Thank you for your help for booking.

ASSISTANT: Our pleasure to help you Carter.