Data:
You have the following customer data:
Customer ID Name Email Phone Number City Purchase Amount Join Date
C001 John Smith john.smith@example.com 123-456-7890 New York 150 1-Jan-23
C002 Jane Doe jane.doe@example.com 234-567-8901 Los Angeles 200 15-Jan-23
C003 John Smith john.smith@example.com 123-456-7890 New York 150 1-Jan-23
C004 Alice Johnson alice.j@example.com 345-678-9012 Chicago 180 20-Feb-23
C005 Bob Brown bob.brown@example.com 456-789-0123 Houston 220 5-Mar-23
C006 Carol White carol.white@example.com 567-890-1234 Phoenix 170 12-Mar-23
C007 David Black david.black@example.com 678-901-2345 New York 200 20-Mar-23
C008 Eve Green eve.green@example.com 789-012-3456 Los Angeles 150 25-Mar-23
C009 Frank Blue frank.blue@example.com 890-123-4567 Houston 190 28-Mar-23
C010 Grace Pink grace.pink@example.com 901-234-5678 Chicago 160 1-Apr-23