My name is S.B（这人名字简写。。。原谅我）, and I've been a professor at（我本科学校TOP3）for almost four years now. Perhaps you have taken a course from me? I am in the USA for the next several days
My colleague Professor（K.B申请学校的BOSS）(International Programs ) invited me to call you to discuss your LLM plans and to answer any questions you might have. If you give me your mobile number, may I call you in the next 3-4 hours? (your day: Saturday, 11 a.m. to 2 p.m.) Or, I can call you early next week.