You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Justin Lee here.

ASSISTANT: How can I assist you?

USER: Actually, I am looking for a flight having 0 connections, can you please help me out with booking of a flight ticket from Los Angels on 05/30?

ASSISTANT: Sure, may I know your airport codes please?

USER: Sure, my nearest origin airport code is LAX and my destination airport code is DCA.

ASSISTANT: May I know your return date please?

USER: Sure, I would like to return on 06/01.

ASSISTANT: Delta airlines is having a flight with travel charge of 100, shall I proceed for booking?

USER: If it is a direct flight, you can proceed with booking.

ASSISTANT: Your ticket has been booked with flight-1029 with 0 connection, have a safe journey.

USER: Thank you for your great help, have a nice day.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.