Whose Hello is it Anyway?

In a bizarre twist of fate, you find yourself in a surreal city where every conversation begins with the phrase 'Hello!' and no one can remember who they are either. As an amnesiac detective, your task is to unravel the identities of quirky residents and solve a series of humorous yet dark mysteries surrounding the city's peculiar greetings. Engage in dialogue puzzles, gather clues by navigating the landscape of forgotten memories, and confront absurd scenarios where characters may or may not be who they claim to be. Can you deduce the truth before the day ends, or will you be lost in the sea of 'Hellos' forever?