You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I need a flight ticket booking from OAK to PHL to attend a meeting, can you please help me with booking?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: Thank you and I want to take off on Dec 4th and I will arrive back on Dec 6th.

ASSISTANT: Do you have any preferences about class?

USER: I have planned to travel in an economy class flight.

ASSISTANT: Do you have any limits about flight connections?

USER: Yes, please check the flight with a single land over in my trip.

ASSISTANT: Please mention your name.

USER: Sure, I am Carol Carter.

ASSISTANT: The Frontier airlines providing an economy class flight with price 100 and the connections 1. The departure time is 16:00 hrs and arrival time is 9:00 hrs.

USER: That is perfectly matching to my criteria, you can proceed with booking.

ASSISTANT: Your ticket is booked. The flight number is 1010.

USER: Thank you for your enormous help with my flight ticket booking.

ASSISTANT: Welcome, have a great day.