"Should I ~?" and "Shall I ~?"
Hello everyone,
What is the difference between "Should I ~?" and "Shall I ~?"
E.g.
If a blind elderly person was trying to cross the street, what would you tell him?
"Should I hold your bag?"
Or
"Shall I hold your bag?"
Thank you so much for reading, everyone.
I will be so grateful for any help you can provide.