Hello. Myself Brenda Clark.
Hello, how may I assist you?
There is a art exhibition in Los angles, so I want to  book a ticket from CLT to LAX.
Ok, when would you like to travel?
I would like to travel on 12/19 to 12/21.
Sorry Brenda, there is no flights available for your request.
That's fine, thank you for your service.
Thank you for using our service, have a nice day.