German phrase
Danke, aber das passt nicht für mich.
Meaning
Thanks, but that does not work for me
When to use it
It politely says no. Thank the person first and explain that it does not fit your plans.
Example dialogue
Hast du am Samstag Zeit? Wir gehen ins Konzert.
Do you have time on Saturday? We are going to a concert.
Danke, aber das passt nicht für mich.
Thanks, but that does not work for me.