से बात करना चाहते हैं

… want to talk to

→ से
phrase Rare #9,004
… want to talk to The person spoken to comes before से. चाहतें हैं is used with हम here; the phrase can also express a polite ‘you want to talk to …’ depending on context.
HI: हम अपने शिक्षक से बात करना चाहते हैं।
EN: We want to talk to our teacher.