You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Susan Thompson. I am planning to book a ticket to attend a meeting at LAS. Can you please help em out to book a ticket from ATL?

ASSISTANT: Sure, could you please share me with your dates of travel?

USER: I would like to travel on 12/28 and return back on 12/20. Make sure my connection limit is 0.

ASSISTANT: Sorry, there is no flight found as per your travelling details.

USER: That's fine. Thank you for your service.

ASSISTANT: You are welcome.