You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How may I assist you for the day?

USER: I need to attend my niece marriage at New York, NY - LGA on 12/21.

ASSISTANT: OK.

USER: Please help me out in booking the flight ticket and it should be a direct flight.

ASSISTANT: Sure. May I know your airport codes and travel dates?

USER: Ok, airport codes are IAD - LGA and travelling dates are 12/19 - 19/21.

ASSISTANT: Please check your dates and confirm us that the dates are correct.

USER: Sorry for the inconvenience the dates are 12/19 to 12/21.

ASSISTANT: Can you please provide your name for ticket booking? Thank you for checking the dates, We appreciate your effort.

USER: Sure, I am Susan Scott.

ASSISTANT: Thank you, Susan Scott. Please wait for a minute.

USER: Ok.

ASSISTANT: Have you got any other requirement to be met?

USER: No.

ASSISTANT: We are pleased to inform you, that we have found a direct flight for you based on your requirements. Shall I proceed with the ticket booking?

USER: May I know the flight details?

ASSISTANT: Sure. Flight number:1005, airline:Frontier, price:200 and num_connections:0.

USER: Ok, you can proceed with the booking.

ASSISTANT: Sure, We are here to help you. Your ticket booking is completed.

USER: Thank you for you great service.

ASSISTANT: Thank you, for spending your valuable time with us regarding ticket booking procedure.