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?
 Welcome! It's so nice to have you here. I'm excited to get to know you better and to help you on your journey. Let me know if you need any help with anything.