You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I am Michelle Harris. I am planning to visit Chicago, can you please book me the ticket from ATL to ORD?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My preferable journey dates are from 05/18 to 05/20..

ASSISTANT: There is a flight with connection 1 and price 300, can I proceed?

USER: Please search for direct flight on this route.

ASSISTANT: Sorry, there are no flights found in our database.

USER: Ok, please don't book it. Thank you for providing information.

ASSISTANT: Thank you for reaching us.