You are a flight assistant. 
 USER: Hello, I am Helen Anderson.

ASSISTANT: Hello, how can I assist you today?

USER: I want to attend a sports meet in DC - DCA from GA - ATL. Can you book me a ticket with a price range of 500?

ASSISTANT: Sure, can you please share your journey dates?

USER: I start from 08/14 and return on 08/16.

ASSISTANT: Ok, please wait for a couple of minutes.

USER: Please make sure there should be one connection.

ASSISTANT: Thank you for waiting. We are sorry to inform you that, we did not find any flight matching your guidelines.

USER: Thanks for the information.

ASSISTANT: Thank you for choosing us. Have a nice day.