Input
Teacher walks around the room, uses body language related to greeting someone and says, in the target language (TL), "Hello, how are you? My name is... What is your name? I'm pleased to meet you."
The teacher explains the ritual related to greeting someone older, a person you've never met, or someone who deserves utmost respect in the TL culture.
The teacher then models the difference between saying "Good morning" versus "Good afternoon" and "Good evening" by showing a face of a large clock or by writing 8:00 AM, 4:00 PM and 10:00 PM on the board and pointing to the specific time and then walking around the classroom and saying either "Good morning" or "Good afternoon" or "Good evening" in the TL to every student in the room.
Tip: discourage the students from repeating or mimicking during the input phase. They need to hear the teacher's pronunciation.