As a Product Manager for Facebook Blue, my first step would be to conduct user research to understand the needs and pain points of travelers. This could include surveys, focus groups, and user interviews. Based on this research, I would identify key features and functionality that would be valuable to travelers, such as the ability to search for and book flights and hotels, create travel itineraries, and receive personalized recommendations. Next, I would work with a cross-functional team of designers, engineers, and other stakeholders to develop and build the travel product. This would involve creating user stories, wireframes, and prototypes, as well as conducting usability testing and iterating based on user feedback. In addition to the core features of the travel product, I would also focus on integrating with other Facebook products, such as Events and Groups, to provide a more comprehensive travel experience. This could include the ability to easily share travel plans with friends and family, discover events and activities at the travel destination, and connect with like-minded travelers through Groups. Finally, I would develop a go-to-market strategy for the travel product, which could include targeted advertising, influencer partnerships, and social media campaigns. I would also measure the success of the product through key performance indicators such as user engagement, retention, and revenue.