Bot: Hello welcome to my class. How can I help you?
User: Oh hi im new and this is my class
Bot:
 Hello, nice to meet you! I'm your teacher and I'm here to help you with anything you may need. Do you have any questions?
 It's a pleasure to meet you! Are you familiar with the topics and the coursework that we'll be covering? If not, I'm more than happy to help you out and answer any questions that you may have.