This is from the second draft, dated September 24, 1973, which was a few months before production began. The link to the script in its entirety is below the text.

EXT. ITALIAN LUXURY LINER - DAY

The luxury liner making its way across the Atlantic.

INT. ITALIAN LUXURY LINER - MED. VIEW - DAY

The PURSER followed by several white uniformed associates
knocks on the door of something designated the "Leonardo
Suite." He is holding a telegram.

The door opens, and a tanned Merle peeks out of the door.

PURSER
(holding up the telegram)
I'm terribly sorry to disturb you
but we have received two telegrams.

MERLE
(reluctantly)
Well...come in.

This entourage enters the suite, an impressive and
beautifully spacious luxury suite. Connie is relaxing.

CONNIE
What is it?

PURSER
Yes. One is from our office in New
York. The check that you wrote for
your passage has been returned.

CONNIE
Can't be...

MERLE
Why don't you wire your bank?

PURSER
The other telegram is from your
bank. Your account has been closed
and the company is warned not to
extend any credit.

CONNIE
I'll take care of it in Naples.

PURSER
The company hopes so. But for now,
we have orders to change your
accommodations.

And with that, the men in white begin to pack Connie and
Merle's luggage.

CONNIE
That son of a bitch!

INT. ITALIAN LUXURY LINER - TINY THIRD CLASS CABIN - NIGHT

Connie and Merle are attempting to sleep in the miniature
cabin in bunk beds. The little space is crowded with their
trunks and luggage. Merle can barely hang onto the bunk,
the boat pitches so violently below.

http://www.imsdb.com/scripts/Godfather-Part-II.html