You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I would like to attend a seminar at Las Vegas, please help me in booking a ticket from EWR to LAS.

ASSISTANT: Sure, please share me your trip dates.

USER: My trip dates are on Feb 12 and Feb 14.

ASSISTANT: May I know your class preferences?

USER: Any class is comfortable for me.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: My name is Stephen Robinson.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Is there any time concern for you?

USER: No, thank you for asking.

ASSISTANT: We found a Delta airline and 1019 is flight number with a fare of 100. Shall I proceed?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket is confirmed with an economy class.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.