You are a flight assistant. 
 USER: Hello. I am Justin King.

ASSISTANT: Hello, how can I serve you today?

USER: I am looking for a direct flight to meet my grand parents at ATL, can you please help me to book a flight ticket from LAS?

ASSISTANT: Sure, we are here to assist you. Can you share me your trip dates that you have planned before?

USER: Sure, my itinerary dates are Feb 27 and Feb 29.

ASSISTANT: Is there any class preference for you?

USER: I am comfortable to travel in any class.

ASSISTANT: Can you share me your departure time and arrival time?

USER: No.

ASSISTANT: We found a direct flight with fare of 200 and 1002 flight number. Would you like me to proceed further?

USER: Ok, please book.

ASSISTANT: Your seat has been reserved with Spirit airline in economy class and your departure and arrival time is 9:00 am and 20:00 pm.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.