Sie geht an einen potentiellen Betreuer meiner Abschlussarbeit. Dieser hat schon eine andere Arbeit von mir betreut; in diesem Rahmen haben wir angefangen, uns zu Duzen.

Vielen Dank!

"Hello XXX,

I hope you are well.

I am interested in XXX, which is why I am doing my master's thesis in the framework of the XXX (project) at the XXX (institute) (using XXX data and with XXX as second supervisor).

I would like to ask you whether, for example XXX (date) or at a later date, there would be a possibility of you being my first supervisor.

I would also like to thank you again for XXX; it really helped me a lot with my XXX application.

I hope you have a good week.

Best,

XXX"