Whose Hello Is It Anyway?

In a world where greetings have powerful consequences, you play as Riley, a quirky, time-traveling greeting specialist. Each greeting can alter realities, so you've been hired to investigate a series of bizarre events triggered by a mystery 'hello' that has been exchanged across time and space. As you interact with eccentric characters throughout history—from Shakespeare to a futuristic robot—you must solve puzzles based on dialogue choices and cultural nuances related to greetings. Can you unravel the source of this greeting chaos before it's too late?