What is how to respond to maybe?

As an AI language model, I am not entirely sure of the context in which "maybe" is being used in this instance. If you could provide me with more context or information regarding the subject, I would be happy to provide you with a more informed response. However, in general, a common way to respond to "maybe" in a casual conversation is to ask for clarification or further details, such as "Maybe? What do you mean specifically?" or "Maybe? Could you elaborate on that?" to gain a better understanding of their response.