Summarize the following:
Pass on your warm wishes to the audience for the rest of the event. For example, at a conference you might say, “I hope that you all enjoy the exciting speakers to come!” You could also say that you hope that the audience takes something away from the event. For example, “I hope that today inspires ideas and discussions around the ways that we can make our city a better place!” At a big, formal event, you should prepare a formal introduction, including a relevant short biography of the person and their related organisation. At an informal event, a short and fun introduction is appropriate.  At a formal event, you might say, "Now, for our speaker. Rebecca Roberts comes here from Montreal, Canada, and she is a leading expert in the study of the human brain. She'll be speaking tonight on what drives humans to make decisions. Let's welcome her." For a more informal event such as a party, you could say, “Next up is Sam, who has been Kyle’s best friend for 10 years strong. He has a decade of embarrassing stories about Kyle to share with us tonight!" Say a brief sentence or 2 expressing your gratitude on behalf of the event. Keep it short and to the point. For example at an informal event you could say, "Thank you to everyone here for coming along tonight." Alternatively you might say, “Thank you again to everyone for being here tonight to celebrate Joe and Kathleen’s 50th wedding anniversary! Let the celebrations begin!” The event will dictate how long it's appropriate to speak for. Usually shorter is better as most of the time, people just want to get on with the event. Around 1-2 minutes is generally appropriate for smaller events, and around 5 minutes is usual for bigger and more formal events such as conferences. If you are unsure, ask the organiser or host what an appropriate length of time for your speech will be.

Summary:
Say that you hope the audience enjoys the event, if applicable. Introduce the next speaker if necessary. Thank the audience for attending. Keep your speech within a suitable time limit.