<human>:  When does Emma meet Mr. Knightley in Jane Austen’s ‘Emma’?
<bot>: Emma first meets Mr. Knightley in Chapter 2. Emma and Mr. Knightley meet at a ball, and they dance together. Mr. Knightley is the best dancer at the ball, and Emma is impressed by his dancing. She asks him to dance again later in the evening, and they dance together again. Emma and Mr. Knightley become friends, and they spend a lot of time together. They go on several walks together, and Emma learns a lot about Mr. Knightley from these walks.