You're starting a business. You need a bank account, so you walk into a bank and say this to an employee who's sitting at the customer service desk.
You're leading a meeting at work. One of the attendees at the meeting asks you a question. You don't want to answer the question in front of the whole group, so you say this.
Your company has a website which uses lots of videos. You're trying to find a new service to use for storing and playing the videos. You write this in a contact form for one of the services.
At work, you always get sleepy after lunch and don't work very efficiently. You say this when describing the problem to a friend of yours.
You're working on a school project and need to buy some supplies for it. Your partner on the project offers to buy the supplies. You want to pay half of the cost, so you tell him this.