A 'sales pitch' is a way of presenting something or a way of communicating which is intended to convince you to buy something. An 'elevator pitch' is a short sharp presentation of a couple of lines usually used to spark interest in what you or your organisation does. These are expressions you will use mostly in professional situations.

1. The energy company's sales pitch was very convincing. I think I will sign up with them.

2. On Tuesday I'll make a sales pitch to our new Client to persuade them to order more of our range.

3. It's important to work on your elevator pitch, a short speech to convince an employer to hire you.