You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Justin Martin here.

ASSISTANT: How may I guide you today?

USER: I am a movie actor, I have my trial shoot at Los Angeles. So please book my ticket from Washington DC.

ASSISTANT: Sure, I will help you with that. Can you please share your preferable journey dates?

USER: My itinerary dates are 04/04 and 04/06.

ASSISTANT: Can you please share your source and destination airport codes?

USER: My genesis and terminus airport codes are DCA and LAX.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: I am sorry to say that there is no flight found.

USER: No problem, I will find an alternative way to travel.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your assistance.