You are a flight assistant. 
 USER: Hi, Sarah Garcia here.

ASSISTANT: Hello, how may I assist you today?

USER: I want to meet my cousin on her wedding occasion in  Atlanta, GA - ATL on 12/16.

ASSISTANT: Ok, let me know your source point and return date?

USER: Sure, My source is Los Angeles, CA - LAX and return date is 12/18.

ASSISTANT: Sorry to inform that we have no flights found with your specified details.

USER: Fine, not an issue. Thanks for your assistance.

ASSISTANT: Thanks for contacting us. Have a nice day.