- You're not really going, Wick.
- I certainly am.
- But you can't leave him alone. Not for four days.
- Yes I can.

5 seconds sound clip from the The Lost Weekend (1945) movie soundboard.

You can hear this line at 00:18:09.685 in the Blu-ray version of the movie.

Quote context

[...]

- And out there it's not Third Avenue any longer. It's the Nile, Nat, the Nile, and down it moves the barge of Cleopatra.

- Come here. Purple the sails, and so perfumed that the winds were love-sick with them.

- The oars were silver, which to the tune of flutes kept stroke...

- Maybe he's at Morandi's or Nat's bar... or that place on Forty-second street?

- What difference does it make?

- You're not really going, Wick.

- I certainly am.

- But you can't leave him alone. Not for four days.

- Yes I can.

- Oh. For heaven's sake, Wick. If he's left alone, anything can happen!

- And I'll be tied up at the office every minute. All Saturday. All Sunday. I can't look out for him.

- You know how he gets. He'll be run over by a car. He'll be arrested.

- He doesn't know what he's doing. A cigarette might fall from his mouth and he'll burn in his bed...

[...]