Red Flack.
3 seconds sound clip from the The Big Trail (1930) movie soundboard.
You can hear this line at 00:18:04 in the Blu-ray version of the movie.
Quote context
[...]
- I've changed my mind. I'll scout for that bull train after all.
- Well, that's a ray of sunshine. Shake hands afore you change your mind again.
- Got a good wagon boss for the trip?
- Flack? Ha! Why, he likes to do it.
- But he can run a bull train. Here he comes now.
- Well, Wellmore, all ready to start?
[...]