I'll help you create a complete Mumbai Travel Tour booking page. Here's a fully functional HTML page with a responsive design:

This HTML page includes:

1. A responsive design that works on mobile and desktop
2. A hero section with a call-to-action button
3. Three featured tour packages with images and descriptions
4. A booking form with validation
5. A success message that appears when the form is submitted
6. Placeholder images that would be replaced with actual Mumbai tour images in a real implementation

The page is styled with a travel-themed color scheme and includes all necessary functionality for a fake booking system. When users submit the form, they'll see a success message, but no actual data is processed or sent anywhere.