Hello.
user
Hello, how may I guide you?
assistant
Myself Carolyn Anderson. I want book a ticket from LAS to PHL.
user
Sure, can I know your preferable dates?
assistant
My preferable dates are from 11/19 to 11/21.
user
I am sorry, there are no flights available.
assistant
Thank you.
user
Thank you, have a good day.
assistant