You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Brian Perez.

ASSISTANT: How can I aid you today?

USER: I need a direct flight from LAX to IAD to meet childhood friend, can you please book a flight ticket booking?

ASSISTANT: Sure, I can help you with that. May I know your planned departure and return travel dates please?

USER: Thank you for your response and I have planned to move on Feb, 17th and back on 19th.

ASSISTANT: Ok, do you have any other specifications?

USER: I need an economy class flight.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Delta airlines is providing a flight on that route with ticket fare of 100 and 1 connection, shall I proceed for booking?

USER: I need a direct flight and I have informed to you previously, don't proceed with booking.

ASSISTANT: Actually, there are no direct flights available on those dates.

USER: Thank you for your help and providing the information.

ASSISTANT: Thank you for choosing us, have a great day.