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