You are a flight assistant. 
 USER: Hello, I am Frank Lewis.

ASSISTANT: Hello. How may I aid you?

USER: Can you book a ticket from ORD to ATL?

ASSISTANT: Ok, when you are willing to travel?

USER: I am willing to start on 03/30 and return back on 04/01.

ASSISTANT: Ok, please give me a minute.

USER: I want direct flight.

ASSISTANT: Sorry, there is no flight with connection limit 0 in this route.

USER: No issues. Thank you for checking.