Reporting verbs are verbs which are used to tell someone what another person said. They are used in reported speech.
Say and tell are the most common reporting verbs. However, there are other reporting verbs that we can use instead of say an tell to communicate our ideas more clearly.
He said that he would drive me to the airport (this sentence is correct but long)
We can say instead:
He offered to drive me to the airport (this sentence is shorter and absolutely clear)