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

ASSISTANT: Hello, how may I serve you today?

USER: I am planning to go for a holiday trip with my friend's, can you please help me to book a flight ticket on 09/24?

ASSISTANT: Sure, can you please share airport locations?

USER: I want to fly from ORD-CLT.

ASSISTANT: May I know your return date of travelling?

USER: Sure it is 09/26.

ASSISTANT: Do you have any other restrictions to be met?

USER: My price limit is 1000. And make sure that I need a direct flight.

ASSISTANT: Ok, please hold a moment.

USER: Ok.

ASSISTANT: Thanks for your time, unfortunately no flight found on that day.

USER: Ok, no issues, thanks for your information.

ASSISTANT: Thank you for availing us.