Dietmar uses his extensive knowledge from all areas of corporate aviation and hospitality to train and coach flight attendants at all levels of experience. Many examples of real situations were used to explain concepts, and we were encouraged to share our own experiences. Everyone in the class was made to feel that their input was valued. Dietmar Duller greatly contributed to team building within our group, encouraging us to discuss all issues openly. I would highly recommend this training, even if you have been in aviation for many years.