Travel
Hotel room complaint
Report a problem with your room and ask for it to be fixed.
What makes this one hard
You are complaining to someone you will see again tomorrow morning, so the tone has to stay livable while the problem still gets solved. English escalates in steps, and starting at the top of the ladder costs you the room's goodwill for the rest of the stay.
Practice every scenario with a real AI partner
Free to start. The partner reacts in voice, stays in role, and gives feedback on what you said and what you could have said better.