Business English - casual conversations

 https://www.youtube.com/watch?v=k-mKCM84SYY 

https://www.youtube.com/watch?v=mSWazPcMKfg

https://www.englishradar.com/english-communication/business-english-small-talk/

https://www.businessenglishresources.com/expressions-starting-continuing-ending-conversation/