You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you today?

USER: Can you find a direct flight for me?

ASSISTANT: Sure, I will aid you with that. Can you please mention your preferable travel dates?

USER: Sure, my travel dates are from Nov 28 to 30.

ASSISTANT: Could you please mention your preferable airport code names?

USER: Sure, my airport codes are from IAD to LAS.

ASSISTANT: May I know your name for further process?

USER: Sure, I am Scott Lee.

ASSISTANT: Do you have any another specifications?

USER: No.

ASSISTANT: Ok, please hold on a moment.

USER: Sure, get back with good airlines.

ASSISTANT: Delta airline flight available and it is a direct flight, fare is 500, shall I confirm this business class flight?

USER: Please confirm it.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1029.

USER: Thank you.

ASSISTANT: You are welcome Scott Lee.