What is how to respond to good morning?

As an AI language model, I don't have personal preferences or feelings, but here are some general guidelines for responding to "good morning":

1. Say "good morning" back. It is polite and acknowledges the greeting.

2. You can also extend the greeting by adding something like "good morning to you too" or "morning, hope you're doing well."

3. Consider adding another greeting or question, like "good morning, did you sleep well?" or "good morning, how's your day going so far?" This can help start a conversation.

4. If you're not comfortable with conversation, a simple "good morning" is sufficient.

5. Avoid responding with something negative or inappropriate. It can ruin the mood and come across as rude.