Hello.
Hello, how can I assist you at this moment?
I need your help to find a flight from DFW to LAS. Can you please do that for me?
Sure, can I have your  travel  dates please?
Thank you. I am planning to travel on the dates of Dec 18 and Dec 20.
Do you prefer any specific airlines to travel?
No but I am looking for a business class flight.
Do you  have any other specifications?
I need a single connected flight for my journey.
Can I have your good name please?
My name is Jacob Jackson.
Sorry to inform you that no flight is available to you  with business class on your  planned dates.
It's ok, not a problem with that. Thank you for your time.
Thank you for choosing us, have a good day.