Batch File how to search for keywords from user input? -

is there way program can search keywords in user input? example if type in "hello, you?" tell said hello , says hello back.

a more flexible way (possibilty search several words (synonymes)) - here "hello", "hallo" , "hi" (but not "halloween" or "china"):

set input=hello, it's me echo %input% |findstr /i "\<h[ae]llo\> \<hi\>" >nul && echo hello set input=hallo, it's me echo %input% |findstr /i "\<h[ae]llo\> \<hi\>" >nul && echo hello set input=hi, it's me echo %input% |findstr /i "\<h[ae]llo\> \<hi\>" >nul && echo hello set input=it's halloween echo %input% |findstr /i "\<h[ae]llo\> \<hi\>" >nul && echo hello 

the last line gives no output, because searches whole words only.

see findstr /? explanations.

&& works "if previous command (findstr) successful then" (opposite ||)