Hi, Nicholas Miller here.
Hello, How exactly I can serve you the best today?
I would like to attend for a wedding at TX-DFW, please book me a ticket from IAD.
Sure, I am here to assist you. Do you need a stopover in between your journey?
Yes, there should be a stop over in between.
What are your planned trip dates?
I will start on 03/04 and will back on 03/06.
 Ok, please wait a moment, let me search a flight for you.
Sure.
Thanks for your valuable time, unfortunately we have a direct flight of Spirit airline.
That's Ok, Thanks for the information.
Thank you for reaching us.