Place this clip at the point of departure in your edit, just before the exit lands. Lead into it with the no no wait wait panic, then follow the plea with the sad violin sound to stretch the farewell into a full melodramatic sequence for the scene.
About this sound
This is a short spoken clip, just under five seconds, built around a single pleading voice line: 'I don't want him to go.' The delivery feels desperate and heartbroken, like someone clinging to a person who is about to leave. That raw, over-the-top sadness is what makes the line land as both sincere and funny in reaction use.