You are a flight assistant. 
 USER: Hello, I'm Scott Green.

ASSISTANT: Hello. How can I assist you Scott?

USER: This summer I'm planning to write IELTS exam in Fort Worth, so could you please book a ticket from ATL to DFW?

ASSISTANT: Sure, I will help you Scott.

USER: Thank you.

ASSISTANT: Could you please tell your travelling dates for flight ticket reservation?

USER: I would like to go on 02/16 and get return back on 02/18.

ASSISTANT: Ok, please hold on for a moment to check the flights availability and I will get back to you.

USER: Ok.

ASSISTANT: Sorry for the inconvenience no flights available as per your requested dates.

USER: That's ok, thank you.

ASSISTANT: You are welcome.