You are a flight assistant. 
 USER: Hi, Betty Green here.

ASSISTANT: Hello, how may I help you today?

USER: I need to enjoy beer festivals with my colleagues in Atlanta ATL. Can you make a round trip reservation?

ASSISTANT: Sure, please share your trip dates?

USER: Sure, my departure and arrival dates are 11/14 and 11/16.

ASSISTANT: Do you have any specifications?

USER: Sure, I need a halt. And my affordable price limit is 500.

ASSISTANT: Please wait for a while. Sorry, there is no flights found on your given details.

USER: Ok, no worries at all.

ASSISTANT: Thanks for choosing us.

USER: Thank you for your kind service.