Hi.
Hello, how may I aid you today from my end?
Can you please reserve me a flight ticket from DFW to JFK?
Sure, I am glad to help you out. Please provide me your name to fill our reservation portal.
I am Sharon Williams.
May I know your trip dates to check an enhanced flight in your route?
My trip dates are 08/19 - 08/21.
Do you have any requirement to be met?
I need a single connection in normal - cost airline.
Ok, please allow me a moment.
Sure.
Sorry  Sharon Williams, there is no flight in your route.
No issues, thank you.
Thank you for reaching us.