You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is Joshua Phillips and I want to book a flight ticket.

ASSISTANT: Sure, I will help in booking the ticket. May I know your journey details please?

USER: My Origin is from Atlanta GA - ATL to Denver CO - DEN.

ASSISTANT: Thank you, may I know the journey dates with any other requirements?

USER: My travelling dates are Sep 20 to Sep 22. Price limit should be 200 with one connection.

ASSISTANT: OK, thank you could you wait for a moment, I will get back to you.

USER: Sure.

ASSISTANT: Thank you for your patience, sorry we do not find any flights matching your requirements.

USER: Thanks for your information.

ASSISTANT: Thank you have a great day.