You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you?

USER: I want to attend a Seminar in Los Angeles. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I am happy to help you with that. Can I know your travel dates please?

USER: My travelling dates are May 02 and May 04.

ASSISTANT: Ok, what are your source and destination airport codes?

USER: My airport codes are ATL and LAX.

ASSISTANT: Ok, do you need a direct flight or a connecting flight?

USER: I prefer single connecting flight.

ASSISTANT: Ok, is there any other specifications?

USER: No.

ASSISTANT: Ok, may I know your name please?

USER: My name is Mary White.

ASSISTANT: There is a connecting flight in this route which is provided by an United airlines, the ticket cost is 300. Can I reserve the ticket?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Your ticket is booked with the flight-1000, the departing time is 21:00 hours and returning time is 18:00 hours.

USER: Thanks for helping me.

ASSISTANT: Have a nice journey. Thank you for choosing us.