Your question is Wireframe a Chat Window. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Wireframe a chat window (in a Google drawing tool).
Asked in the phone interview stage. This is a live wireframing task during the phone screen. As you work, explain which user needs your design supports, how you prioritize the interface elements, and what assumptions you would validate.