Muslims always "On duty"

When an European Airline was initially launched, a Muslim gentleman was traveling in the first class section. An air hostess approached him with a complimentary drink, this was an alcoholic drink so that man politely refused.
The air hostess returned but this time brought the drink on a platter, designed to appeal and impress, however, the Muslim man again politely refused, explaining he doesn't drink alcohol.

...The air hostess was surprised and concerned and informed the manager. The manager approached the man with another platter, now designed with flowers and he questioned, “is there something wrong with our service? Please enjoy the drink, it is a complimentary offer.” The man replied, “Thank you, but I am a Muslim and I do not drink alcohol.” The manager still insisted that the man take the drink. The Muslim man then proposed that the manager should give the drink to the pilot first. The manager stated, “how can the pilot drink alcohol, he’s on duty!? And if he drinks there are very high chances for the plane to crash.”

The passenger with tears in his eyes replied, “I am a Muslim and I am always on duty in order to protect my Imaan (Faith) and if I drink I will crash my whole life here and in the Hereafter."