Hi.
Hello.
I'm Amy Collins.
Amy, how can I assist you?
 I want to book a ticket from LAS to DFW, can you help me?
Sure, can you please tell me your travel dates?
Sure, I am planning to go on 03/20 and 03/22.
Ok, please wait for a while.
Sure, please check for a direct flight.
Sorry Amy, there are no flights available on your preferred dates.
It's fine, no problem. Thank you for checking.
You are welcome and have a nice day.