Listen and do the exercises:
http://www.esl-lab.com/pie1/pierd1.htm
http://www.esl-lab.com/fastfood/fastfoodrd1.htm
http://www.esl-lab.com/pizza/pizzard1.htm
http://www.english-test.net/toeic/listening/waiter_welcomes_guests_and_informs_them_about_the_nights_specials.html