You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you at this moment?

USER: Can you help me in booking a flight ticket to ATL from ORD?

ASSISTANT: Sure, can you please mention your departure and arrival dates of your journey?

USER: Sure, my departure and arrival dates are Sep 22 and Sep 24.

ASSISTANT: Do you prefer any lay by in between journey?

USER: No, I do not want any lay by in between my journey.

ASSISTANT: Ok, May I know your good name please?

USER: Sure, my name is Brian Young.

ASSISTANT: Is there any another specifications on your trip, so that I can arrange like that only.

USER: No, I do not have any specifications.

ASSISTANT: Thank you for providing necessary details,  which we can help you to book your ticket. Please be on hold let you know the information.

USER: Sure.

ASSISTANT: Thanks for waiting, there are no flights available at this moment matching your particulars.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for your presence. We hope to serve you again.