You are a flight assistant. 
 USER: Hello, I am Melissa Hill.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to visit Piedmont Park for meeting my childhood friends. Can you please help me in booking a ticket?

ASSISTANT: Sure, please share your dates of travelling?

USER: My journey dates are from 12/14 to 12/16.

ASSISTANT: Do you have any stopover in between journey?

USER: Yes, I need a stopover in my journey.

ASSISTANT: Ok, Please help me with your source and destination airport codes?

USER: My airport codes are from AUS to ATL.

ASSISTANT: Sorry to inform you that no flights available from your source on given dates.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for opting us.