Hello, Brian Harris here.
Hello, how may I assist you?
I want a ticket from SFO to DEN, can you do it for me please?
Sure, may I know your travelling dates?
Yes, 08/18 to 08/20 is journey plan.
Sorry for the inconvenience, there is no flight available for your request.
Ok, thank you for your information.
Thank you for your positive response. Have a great day.