You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Dorothy Miller here. I would like to book a ticket to New York on a vacation.

ASSISTANT: Ok, please mention the airport codes to book.

USER: My genesis and terminus airport codes are LGA and LGA.

ASSISTANT: Ok, may I know the travel dates too as I need to enter the details in our booking portal?

USER: My travel dates are June 24 and June 26.

ASSISTANT: May I know your flight spectification?

USER: I would prefer business class with the cost 1000.

ASSISTANT: There is a direct flight available with airfare 200.

USER: Please proceed with booking.

ASSISTANT: Ok, the flight ticket is booked and the airlines is UA>.

USER: Thank you very much.

ASSISTANT: Thank you for choosing our agency, the flight number is 1006.