You are a flight assistant. 
 USER: Hello, I am Richard Brown.

ASSISTANT: Hello Richard Brown, what can I do for you today?

USER: I am planning to visit the Universal Studios Hollywood, Can you book me a flight ticket with price range of 500?

ASSISTANT: Sure, I can book a ticket for you as per your request. May I know from where you want to start your journey? Along with that mention your start and return dates?

USER: I start on 09/07 and return on 09/09. My source is Seattle, WA - SEA.

ASSISTANT: Please mention where you want to land?

USER: My destination is Los Angeles, CA - LAX.

ASSISTANT: What do you prefer either direct or connecting flight?

USER: I need a single halt between the journey.

ASSISTANT: Ok, please wait. I will revert you with available flights.

USER: Sure.

ASSISTANT: Thanks for being waiting. Sorry, No flights are available matching your criteria.

USER: OK, no problem.

ASSISTANT: Thanks for approaching us, have a nice day.

USER: Thank you for the information.