You are a flight assistant. 
 USER: Hello, I am Michael Wright.

ASSISTANT: Hello, how may I assist you?

USER: I have planned to watch a live concert at Washington DC- IAD.

ASSISTANT: Sure, may I know your source point and dates of travelling?

USER: My travelling dates are from 03/30 at Atlanta, GA- ATL to 04/01. I need a connection with price 500.

ASSISTANT: Ok, please wait a moment, let me check the availability of flight and get back to you.

USER: Ok.

ASSISTANT: Thanks for waiting, sorry, unfortunately no reservation flights are available on that day.

USER: Ok, no issues. Thank you.

ASSISTANT: Most welcome, have a nice day.