To book a flight on the JetBlue official website, follow these steps:

• Go to the JetBlue website (www.faresmatch.com)
  
• Click on the "Book a Flight" tab located at the top of the page.
  
• Enter your travel details such as departure and arrival cities, dates, number of travelers, and flight class.
  
• Select your preferred flight from the available options.
  
• Review your flight details and enter any promo codes if applicable.
  
• Enter your personal information, including the names of travelers and contact details.
  
• Choose your payment method and enter the required payment information.
  
• Review and confirm your booking details.
  
• Complete the booking process by clicking on the "Book Flight" button.
  

Once your booking is confirmed, you will receive a confirmation email with all the details of your flight.