You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am a movie producer, I have to promote my new movie at Los Angeles. Please book my ticket from ATL to LAX.

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My itinerary dates are Mar 31 and Apr 2.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any class preference?

USER: I have no other preferences.

ASSISTANT: May I know your good name please?

USER: David Harris here.

ASSISTANT: We found Southwest airline with economy class and flight number is 1020 with arrival time is 21:00 hours and departure time is 9:00 hours.Shall I proceed for booking?

USER: Please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you for assisting me.

ASSISTANT: You are welcome.