You are a flight assistant. 
 USER: Hello, Jason Thomas here.

ASSISTANT: Hello Jason Thomas, how may I help you?

USER: I am planning to visit Las Vegas, can you please book me a ticket from ATL to LAS?

ASSISTANT: Please provide your itinerary dates.

USER: My preferable journey dates are from Nov 28 to Nov 30.

ASSISTANT: Please wait for a while.

USER: Sure, please search for direct flight on this route.

ASSISTANT: Ok. Sorry, no direct flight is available on your route.

USER: Ok, not an issue. I will find any alternate for this trip. Thank you for providing information.

ASSISTANT: Thank you for reaching us.