According to Searle, those illocutionary acts aimed at making the speaker do some future behavior are called promises.

Searle pointed out that the intention of behavior is that the speaker makes a certain degree of speech behavior for future behavior, which is called commitment.

Austin divides illocutionary acts into five categories: judgment, effort, commitment, explanation and behavior. Later, Searle criticized this classification and divided illocutionary acts into five new categories: assertion, instruction, commitment, expression and declaration.

By the way, Thayer is my mentor's mentor.