If you are arriving at Dalaman Airport you will pass through passport control and into the baggage hall. Once through Customs, you will then exit the terminal building. If you head straight and down the ramp to the car parks you will see where the tour reps and drivers are waiting to collect their guests.
Your driver may or may not speak English, or have limited English. They will normally make a comfort stop on the journey, but should you wish to stop at any other time then please let them know. Licensed transfer companies employ many drivers, so you may not get the same driver at the end of your stay to take you back to the airport.
If you are particularly happy with the service you get from your driver then do tip them before they leave you at the property.