burson-marsteller is a truly global public relations agency with a seamless network consisting of 67 offices and 74 affiliate offices, together operating in 98 countries across six continents.

Please write the text above using proper case.
Burson-Marsteller is a truly global public relations agency with a seamless network consisting of 67 offices and 74 affiliate offices, together operating in 98 countries across six continents.