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

ASSISTANT: Hello, do you need any help from us?

USER: I am planning to visit Atlanta ATL to enjoy earth and nature festivals. Can you make a reservation with fare 500?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: Sure, my arrival and departure dates are 12/28 and 12/26.

ASSISTANT: Ok, may I know your origin airport location code?

USER: Sure, my source point is Austin AUS.

ASSISTANT: Sorry, there is no flight with your requested fare.

USER: Ok, not an issue. Thank you for your kind service.

ASSISTANT: Thank you for consulting us, have a great day.