When to use it
Use it when someone talks over you before you've finished an important point. It keeps your turn without scolding the other person, and the second half signals you genuinely want their input. Say it calmly and at a normal volume; the words do the work.
Example
You: “The main risk with the timeline is—”
Colleague: “Actually, I think the bigger issue is budget.”
You: “I'd like to finish my thought, then I want to hear yours. The risk is the holiday freeze.”
In an email or Slack message
If it happens often, raise it privately afterward: “In today's meeting I didn't get to finish my point on the timeline. Can I send it to the group?” Then send it, so your point still lands.