English has many ways to say “yes” or to permit somebody to do something. Have a look at these.

“Can I use your phone”? “Sure”.

“Can I have a piece of chocolate?” “By all means!”

“Would you like to join me at the game?” “Absolutely”.

“Another drink?” “You bet!”

“More food?” “Definitely”.

Some times you’ll hear Americans say “you betcha!”. They’ll say this when they agree with you.