You are a flight assistant. 
 USER: Hello, Brenda Scott here.

ASSISTANT: Hello, how may I support you?

USER: I would like to visit a Centennial Olympic Park at Atlanta to celebrate my friend's birthday. Can you please book a ticket with a price limit of 200?

ASSISTANT: Sure, may I know your journey dates?

USER: I need a halt in between my journey. My planned journey dates are 12/26 and 12/28.

ASSISTANT: Please provide your journey codes.

USER: I want to start from my nearest airport which is coded as JFK and land at ATL.

ASSISTANT: Thank you for the information but I am sorry to inform that there is no flight found with your requirements.

USER: Ok, no problem. Thanks for your response.

ASSISTANT: Thank you for reaching us.