You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Brandon Lewis.

ASSISTANT: How may I aid you Lewis?

USER: I am looking for a direct flight, could you please help me with that?

ASSISTANT: Sure, I will try for that. Can you please provide your preferable dates that you want to travel?

USER: I would like to take off on 07/25 and return on 07/27.

ASSISTANT: Ok, may I know your airport codes for booking?

USER: My nearest source airport code is DCA and destination airport code is LAX.

ASSISTANT: Please wait a moment to check the flights availability.

USER: Sure.

ASSISTANT: Based on your information, I have found a flight with 1 connection with the fare of 300 from UA airlines. Is it ok for you?

USER: I am looking for a direct flight.

ASSISTANT: We are sorry, please wait a moment to check the direct flight.

USER: Sure.

ASSISTANT: There are no direct flights available to your locations with your requested dates of travelling.

USER: That's ok, no issues. Thank you for the information.

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