Thanks, Emily and thanks, everyone, for joining our call this afternoon. We are pleased with our first quarter results which exceeded our guidance across all key metrics. Subscription revenue, which now makes up 80% of total revenue, grew 14% year-over-year. This was primarily driven by LTM Enterprise subscription revenue growing 20% year-over-year. Adjusted EBITDA margin was 19% for the first quarter, helping drive a Q1 record operating cash flow of $48 million or 17% of revenue and an all-time record of free cash flow of $35 million or 12% of revenue. Today I'd like to start off by providing key highlights of an extensive operational review we recently conducted across the company. We believe the transformation initiatives we are executing will help bolster our long-term competitive position and reestablish ourselves as a rule of 40 company as we continue to drive profitable growth. As we pursue this evolution, our goal is to deliver increased profitability while prioritizing investment in key strategic areas including AI and go to market initiatives to drive revenue growth and capitalize on our massive TAM that we believe is significantly expanding with AI. The transformation will take time, but we're moving quickly and driving cross functional alignment across the entire organization to achieve our goals. As a result, in 2027 we are targeting to be above the rule of 40 on an adjusted EBITDA basis and be approaching the rule of 40 on a free cash flow basis. Brian will provide more details on this in a moment. Now I'd like to dive deeper into our AI powered platform and how it's well positioned to empower brands to elevate their CX and how they're realizing meaningful benefits through our genius AI suite of products. As I touched on last quarter, in order to deliver personalized and accurate self-service using GenAI you need four key ingredients. First, you need access to LLMs and it's critical to enable brands to easily change the underlying engine to leverage the latest high performing models. We believe our engine agnostic approach allows brands to future proof their AI decision and our AI application layer above these engines acts as the key competitive advantage. Second, you need contextual data which includes consumer specific and brand specific information that is distributed across a large number of back-end systems. Our platform typically integrates into 20 plus systems which enables contextual data to be fed into the LLM in real time in order to provide true context around an interaction. Third, you need historical interaction data. Our CCaaS platform is the system of record for interactions between a consumer and a brand across all channels including those handled by AI agents as well as human agents. And fourth, you need a platform that provides all channels such as voice, text, email, web chat and social to connect consumers to an AI agent as well as to provide a seamless escalation path to human agents. The market demands AI agents that work across all of these channels, but providing a voice channel globally at scale is a huge barrier to entry. These are key reasons why AI Point Solutions and third-party AI vendors are strongly leaning in to partner with us and integrate to our platform. As a result, our platform acts as a control point where we are successfully monetizing that access through our voice stream and transcript stream APIs. To further enhance the value of our platform, we announced that Five9 is deepening our Salesforce partnership with the launch of Five9 Fusion, a best in class native integration with Salesforce to deliver better AI powered customer experiences. With Five9 Fusion, we combined Five9's real time system of interaction together with Salesforce's system of customer record to create a fully integrated AI elevated solution for customer experience. With these new product bundles which are available today, this enhanced integration helps businesses deliver better customer experience, hyper personalized self-service and achieve smarter results with a future ready foundation to drive meaningful business outcomes for our joint customers. Also, we continue to see significant AI momentum driven by real ROI that we are delivering for our customers through our genius AI suite of products. This in turn drives our subscription revenue growth as demonstrated by the following three customer examples. The first is a fast-food chain with over 3,000 restaurants globally. Following the deployment of our AI agents, they experienced a nearly 40% improvement in containment rate. Concurrently, they implemented our Agent Assist solution which reduced after call work time by 35%. As a result of these efficiency gains, they estimate their labor savings to be approximately $1.1 million per year and since deploying our AI agents, their ARR with Five9 increased by 37%. The second example is a global payment processing provider in the U.K. They deployed our AI agents and experienced a 10% increase in self-service in the first year as well as a 50% containment rate. They also recently deployed our AI Insights product in the first quarter of this year to identify even more use cases to generate additional ROI with our suite of AI products. Since deploying our AI agents, their ARR with Five9 increased by 49%. The third example is a personalized healthcare company that provides patients with easy access to medical equipment and supplies covered by insurance. Following the deployment of our AI agents, they have driven a 15% reduction in call volume by automating common questions such as medical equipment delivery status and insurance guidelines. They also expanded the use of our AI solutions by adding chatbots and Agent Assist to gain further efficiencies. Since deploying our AI agents, their ARR with Five9 has more than doubled. Additionally, we continue to lead the CX market with key AI innovations as demonstrated by our recent announcement of a new offering called Spotlight for AI Insights, which is designed to help brands unlock the voice of their customers hidden in troves of interaction data. AI Insights leverages GenAI to mind customer conversations at scale and understand emerging topics, top trends and root causes of issues through a powerful visualization interface. Spotlight takes AI Insights to a whole new level by harnessing the power of GenAI to discover specific trends and metrics that are typically very difficult to identify in an automated fashion. We believe this will not only provide key insights for contact center operators, but also empower lines of business leaders valuable data and tailored intelligence to continuously improve their business through increased sales, enhanced products, elevated CX and more. Another AI capability that is becoming a key part of driving AI agent adoption is our Dial of Trust. This allows brands to scale the level of GenAI that is incorporated into our AI enabled solutions. GenAI is becoming more powerful and more accurate by the day. However, there is a trust spectrum for brands that will vary by different topics and different industries when using AI to confidently provide customers with accurate information and answers. Our Dial of Trust enables brands to manage this risk through a continuum where the level of GenAI and Fusion can be modified for various use cases. We believe that this tooling is essential for delivering trusted AI. As a result of our leading position in AI, we continue to see significant momentum in our AI business as evidenced by virtually all of our $1,000,000 plus ARR new logos continuing to attach AI and AI making up more than 20% of enterprise new logo ACV bookings. Additionally, our enterprise AI revenue grew 32% year-over-year in the first quarter, making up 9% of enterprise subscription revenue. We also continue to further penetrate our install base by leveraging our revolutionary AI blueprint program. It's still early days, but preliminary results are very promising. For instance, in the last several months we have been collaborating with a growing number of our customers to help them build their AI roadmap and identify use cases to generate significant ROI with our AI solutions. 50% of customers going through the AI blueprint process have purchased our AI products. We're highly encouraged by these results and we expect this momentum to accelerate throughout the year. In addition to our AI momentum and opportunity, there remains a significant opportunity in our core CCaaS market with a $24 billion TAM as cloud migrations continue. Therefore, we remain very optimistic about our long-term durable global opportunity, especially at the upper end of the market, which is the largest and least penetrated part of the market and the fastest growing category of our business. Now I'd like to touch on the momentum we're seeing with some of our key partners. As we announced in November, Five9 and ServiceNow continue to execute on the goals of our strategic partnership. Later this quarter, Five9 transcript stream will integrate into ServiceNow interaction management, enabling agents to focus entirely on customer issues without the need for manual note taking. ServiceNow's Now Assist, powered by GenAI, will leverage these real time transcriptions to generate summaries and resolution notes, significantly reducing call wrap up activities and average handle times. Additionally, Five9's intelligent routing engine will soon route ServiceNow digital channels and cases, ensuring seamless and efficient case management. ServiceNow is also integrating its metadata to enrich Five9's workforce engagement management solutions. This will reduce operational overhead for managers by streamlining routing management across both platforms, making it easier to adjust staffing dynamically during peak demand periods. Additionally, last quarter we announced our launch on the Google Cloud Marketplace both in the U.S. and internationally and we saw more than $35 million in ACV pipeline added in the last two months. We're very pleased with the early traction and anticipate the strong momentum to continue. We also recently teamed with IBM to integrate watsonx into our genius AI platform to bring customers the option to leverage watsonx as their preferred LLM when building AI powered CX solutions. Sol this collaboration is designed to enhance our platform's flexibility and help drive the next wave of innovation in AI powered CX, enabling businesses to deliver more personalized, efficient and impactful customer experiences. In summary, we are pleased with our continued momentum in AI for CX and our execution against the massive core CCaaS market opportunity. We believe that our differentiated approach to accelerate AI adoption as well as ongoing innovation of new AI offerings to support the entire customer journey from self-service AI agents to agent augmentation to operational efficiency are key drivers fuelling the momentum in this fastest growing category of our business. Additionally, I want to thank our team of Five9ers whose passion and unwavering dedication continue to be the driving force behind transforming our business to strengthen our leadership position in the industry. We are off to a strong start in 2025 and I look forward to sharing our progress as the year unfolds. And with that I'll turn it over to our President, Andy Dignan. Andy, please go ahead.