You can manage your JetBlue flight booking by following these steps:

Visit JetBlue's Website: Go to JetBlue's official website at https://www.flightsvilla.com/blog/jetblue-manage-flight-ticket-booking
Log In or Retrieve Your Booking: If you have a JetBlue account, log in using your username and password. If you don't have an account, you can often access your booking by entering your last name and confirmation code on the homepage.

Access Your Booking: After logging in or entering your details, look for the "Manage Trips" or "Manage Booking" section on the website. Click on it to access your flight reservation.

Review and Modify Your Booking: Once you've accessed your booking, you can perform various actions, including:

View your itinerary details.
Change your flight dates, times, or destinations (if allowed by your fare type).
Add or update passenger information.
Select or change seat assignments.

Request special services or dietary preferences.
Add extras like checked baggage, priority boarding, or in-flight amenities.

Make payments for additional services or changes (if applicable).
Cancel your booking (subject to the airline's cancellation policy).
Confirm Changes: After making any modifications to your booking, review the details and confirm the changes.

Payment: If you are making changes that involve additional fees or costs, you will typically be prompted to make the necessary payments online.

Confirmation: JetBlue will send you a confirmation email with the updated details of your booking.