If A1, A2, A3 = Hello then add B1, B2, B3

Hello all,

Is there a way to check all text values in Column A and if they are equal "Hello" or "Hello1" or "Hello2" then add all values in Column B and report it to Column c?

for example
A1, A2, A4 report "Hello", "Hello1", "Hello2". Now what I need is for excel to recognize the word "Hello" in all cells in Column A, then look at the value in column B, add them together then report it to a cell in column C. Below is a better example

- |----A----|----B---|---C
1 |-Hello--|---15--|-43
2 |-Hello1-|---23--|
3 |--Bye---|----1---|
4 |-Hello2-|----5---|
5 |--Bye1--|----8---|

Thank you for any help