You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Charles Scott here. Can you please check for the flights from ATL to ORD as I need to attend a meeting.

ASSISTANT: Sure, I am gleeful to help you. Could you please provide your travelling dates to search for the flight?

USER: My travelling dates are from 23rd July to 25th July.

ASSISTANT: Do you have any requirements?

USER: I only need a flight within the price of 500.

ASSISTANT: Sorry to say, there is no flight is available for you.

USER: Oh! That's very disappointing to know.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Anyways, thank you for checking.