Hi.
Hello, how can I serve you the best today?
I want to book a ticket from DEN to LAS. Could you book a ticket?
Sure, can I know your good name please?
My name is Daniel Green.
 When you are willing to travel?
Depart date is May, 29 and return by May, 31.
Do you need direct flight or connecting flight?
I would prefer connecting flight.
 Would you let us know if you have any other preferences?
I prefer business class.
Sorry to say that, there are no flights available on the routes of your journey.
Thank you.
Thank you for opting us.