When greeting Matriuss, one of the options is "My pleasure aswel, sir." Unless that's an advatongue joke, it should be "as well"
Next paragraph, he says "Be as it may", should be "Be that as it may"
Next paragraph, "The device you hold a custom...", forgot the "is"
also, he says "custom mode digital tracker", should that be "custom made"?
later, "Indeed you have proven capable of repairing sofisticated devices", there is an extra space between "of" and "repairing", and "sofisticated" should be "sophisticated"
"If you deliever, I will reward you handsomely", should be "deliver"
In the last paragraph, he says "bind my time", should be "bide my time", I think.
If you ask him about himself, "My hunders of cases", should be "hundreds"
two paragraphs later, "But my prevoious experiences", should be "previous"
Asking about the task:
"I want you to go to my office building on the nothen side of the residential area", should be "northern"
When you return, your third dialogue option is "Hmm, Iet me check", should be 'let"
The next paragraph "has the access to that place" could just be "has access to that place",
and the next line "In addition, I'll give you few special items", should be "you a few"