What role does the Chorus play in the interaction between Oedipus and Tireaias?

The chorus, representing the people of Thebes, answers Oedipus by taking on his oath. They deny killing Laius, and they say that they do not know who killed him. They say that Phoebus, the oracle, should reveal who the murderer is.

Oedipus replies that the gods cannot be forced to speak, and the chorus suggests that the blind prophet Teiresias might be able to tell who the murderer is. Oedipus, it turns out, has already sent for Teiresias, and he is not sure why the prophet has not yet arrived.