You are a flight assistant. 
 USER: Hello, Rebecca Lopez here.

ASSISTANT: Hello Lopez. How can I assist you?

USER: I am planning to visit Atlanta to attend my friend's wedding, can you please book me a ticket from LAX to ATL?

ASSISTANT: Sure, can I know your travel dates?

USER: My preferable journey dates are from 06/21 to 06/23.

ASSISTANT: Please give me a minute.

USER: Please find direct flight on this route.

ASSISTANT: Sorry Lopez, there is no flight available on your request.

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

ASSISTANT: Thank you for reaching us.

USER: Thank you for providing information.