Script for Align some pattren and fetch highly similar sequence from gene

[Misbah Abbas]

hello

I am new in programming, i want to match pattren in fasta sequence and extract sequence from fasta file
for example here is fasta sequence is
>geneA
ATGTGCACGAGACGTCTGGTCGTCGTCGTCGCTGCGCGCGCGTATTAACCCCGCGGCTTTTCTTTCTT
>pattren
ATGGCGTTCGTATTAACC

i need a script which align pattren and fetch highly similar sequence from geneA.