When is the phrase "May I speak?" typically used?

The phrase "May I speak?" is typically used when someone is asking permission to express their thoughts or to contribute to a conversation. It conveys a level of respect for the existing discourse and acknowledges that the speaker wants to ensure it is appropriate to interject. This mannerly approach is valued in both formal and informal settings, as it helps maintain a polite dialogue.

In contrast, the other scenarios do not fit the context of the phrase. Requesting time off, for example, usually involves a more straightforward request indicating absence rather than seeking permission to speak. Providing feedback can be a different type of communication that doesn't necessarily involve asking for the right to speak but instead asserts an opinion or evaluation. Making a reservation relates more to logistical arrangements, which do not typically require a phrase indicating permission to communicate.