Because you have no radio contact to your handling agent you ask the controller if he could be so kind to inform Jet Aviation Zurich (phone number 6 48 84) about this diversion, and that your passenger requests limousine service in Basle.
On departure frequency you have to report that your gear cannot be retracted. Inform the controller that you are continuing, but in case you cannot solve the problem you plan to return to Zurich.
After a few minutes your gear is retracted.
If you have to expect a long approach delay in Stuttgart you proceed to your alternate Frankfurt.
Before departure you want to check the engines on full throttle. Inform the tower that you require about two minutes on the runway to do so.
On reaching your cruising level you are still in cloud and experiencing icing. You would like to climb to FL 210.
During your approach to Bern you cannot see the runway at the minimum and have to go around. You would like to try once more.
The pressurization of your cabin is malfunctioning. Report to the departure controller that you have to interrupt climb at FL 80 and require a couple of minutes to check the problem.