Hello,. I am Karen Brown.
user
Hello, How may I help you?
assistant
I want to attend my niece birthday at Atlanta GA-ATL on 08/08.
user
May I know the source and return date?
assistant
Sure, My origin is Washington DC-DCA and 08/21.
user
Wait a minute.
assistant
Ok.
user
Sorry to tell that there is no flight found based on your requirements.
assistant
No issues, Thank you for the information.
user
Thank you for contacting  us.
assistant