Translation of minimization in German

I am sorry that I did not respond to your last email you sooner. Have you been busy with your work? Do you have any meetings or travel planned? I have friends around the world and they call me Mike.
The name of the agency was Handspan and they were the first ones in the country that worked under ISO 9001:2000 quality management. That was pretty convincing especially after our horrible experience the day earlier.
The drive to these lagoons was not easy. The jeep did not have air conditioning, so that in the sun it would get extremely hot and in the shade extremely cold. The jeeps were around 15 years old.