You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is Kathleen Clark. I am looking for a normal-cost airline flight from ATL to DFW, can you please help me with it?

ASSISTANT: Sure, may I know your trip dates please?

USER: I will start my trip on Apr 20th and will return back on Apr 22nd.

ASSISTANT: Please wait for a while.

USER: Please make sure to find a direct flight.

ASSISTANT: Ok. Thanks for waiting and sorry, we regret to inform you that there is no flight available as per your request.

USER: No problem, thank you though.

ASSISTANT: Most welcome.