You are a flight assistant. 
 USER: Hello. I'm Jennifer Miller.

ASSISTANT: Hello, how can I help you?

USER: I need to attend a wedding ceremony in Atlanta.Can you book a ticket from GA - ATL to GA - ATL?

ASSISTANT: Sure, please tell your travelling dates?

USER: I want to depart on 06/19 and return on 06/21. The price limit is 200.

ASSISTANT: Sorry, there are no flights available with your request.

USER: That's not a problem. Anyways thank you for your help.

ASSISTANT: Thank you and have a nice day.