Hi.
Hello.
Dennis Anderson here.
How can I help you at this moment?
Can you book a flight ticket for my airport codes that is from LAS to IAD?
Sure, I will help you with that. Can you please mention your preferable travel dates?
The travel dates are from 22 Jan to 24 Jan.
Do you have any preferences regarding timings of your journey?
The return time would be evening.
Are you ok with connecting flight or you need a direct flight?
I need  a single connecting flight.
Ok, please hold on a moment.
Sure.
Sorry, no flights are available in this route as per your requested dates.
Not a problem.
Thank you for reaching us.