<human>:  What is a good book I can read that involves time travel?
<bot>: Some popular titles that involve time travel include: "The Time Machine" by H.G. Wells, "The Chronology Protection Case" by Allen Steele, "The Time Traveler's Wife" by Audrey Niffenegger, "11/22/63" by Stephen King, and "A Wrinkle in Time" by Madeleine L'Engle.