I would like to ask about respect level languages in English. I was taught to always use "would like to" instead of "want to" to express politeness and respect. However, I am not sure whether this applies to all subjects.
For example, when I write emails to Professor, I am not sure whether I have to use the words "would like" when the subject is the professor/older people. I am sure that this is correct : "I would like to inform you (professor) that I......". But I am not sure about this: "So if professor (or older people) would like me to do this, please don't hesitate to contact me".
What made me doubtful is this: if I put an older person as the subject and me as the object, shouldn't I have to say "want" instead of "would like" since I am younger than the subject? To me, this sentence sounds that I want the subject to say politely and with respect. Please correct me if I am wrong; sometimes I am confused when writing emails to professors.