<s>
M	B-Protocol
was	O
a	O
virtual	B-Protocol
assistant	I-Protocol
by	O
Facebook	B-Application
,	O
first	O
announced	O
in	O
August	O
2015	O
,	O
that	O
could	O
automatically	O
complete	O
tasks	O
for	O
users	O
,	O
such	O
as	O
purchase	O
items	O
,	O
arrange	O
gift	O
deliveries	O
,	O
reserve	O
restaurant	O
tables	O
,	O
and	O
arrange	O
travel	O
.	O
</s>
<s>
It	O
worked	O
inside	O
the	B-Application
Facebook	I-Application
Messenger	B-Protocol
instant	B-Application
messaging	I-Application
service	O
.	O
</s>
<s>
If	O
a	O
user	O
made	O
a	O
request	O
for	O
M	B-Protocol
,	O
it	O
uses	O
algorithms	O
to	O
determine	O
what	O
the	O
user	O
wants	O
.	O
</s>
<s>
If	O
M	B-Protocol
did	O
not	O
understand	O
,	O
a	O
human	O
takes	O
over	O
the	O
conversation	O
,	O
unbeknownst	O
to	O
the	O
user	O
.	O
</s>
<s>
This	O
allows	O
M	B-Protocol
to	O
learn	O
.	O
</s>
<s>
In	O
January	O
2018	O
,	O
Facebook	B-Application
announced	O
that	O
they	O
would	O
be	O
discontinuing	O
M	B-Protocol
.	O
The	O
company	O
stated	O
that	O
what	O
they	O
learned	O
from	O
M	B-Protocol
would	O
be	O
applied	O
to	O
other	O
artificial	O
intelligence	O
projects	O
at	O
Facebook	B-Application
.	I-Application
</s>
<s>
In	O
April	O
2017	O
,	O
Facebook	B-Application
enabled	O
suggestions	O
,	O
powered	O
by	O
M	B-Protocol
,	O
for	O
users	O
in	O
the	O
United	O
States	O
.	O
</s>
<s>
M	B-Protocol
scans	O
chats	O
for	O
keywords	O
and	O
then	O
suggests	O
relevant	O
actions	O
.	O
</s>
<s>
For	O
example	O
,	O
a	O
user	O
writing	O
"	O
You	O
owe	O
me	O
$20	O
"	O
to	O
a	O
friend	O
triggers	O
M	B-Protocol
to	O
enable	O
the	O
user	O
's	O
friend	O
to	O
pay	O
the	O
user	O
via	O
Facebook	B-Application
's	O
payment	O
platform	O
.	O
</s>
