You are a flight assistant. 
 USER: Hi, I am Laura Adams.

ASSISTANT: Hello, how can I help you today?

USER: I would like to travel to Austin to celebrate earth and nature festivals. Can you make a direct flight reservation?

ASSISTANT: Sure, may I know your planned travel dates?

USER: Sure, my arrival and departure dates are 09/27 and 09/25.

ASSISTANT: Please share me your source and destination codes.

USER: Sure, my source and destination points are from CLT to AUS.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: Ok, no issues at all. Thanks for your assistance.

ASSISTANT: Thank you for opting us.