It is common to greet the audience and introduce yourself when giving presentations:

Good morning,/afternoon/evening
I'm _________, the new Finance Manager.
My name is ________ and I represent _______
Let me take a minute to introduce myself.
Let me start by telling you a little about our company.
I've already met some of you, but for those I haven't , I'm ______

I'm here to talk about . . .
Today, I'd like to say a few words about . . .
I'm going to give you an overview of . . .
The main reason I'm here today is . . .
The focus of my remarks is . . .
I'd like to introduce . . .

Thank you for your time
Thank you for taking the time to be here
I will probably take about . . . minutes
This should last only a few minutes
I hope to be finished by . . .

I've divided my topic into three sections/parts. They are . . .

This presentation can be divided into the following subtopics:

First, Second Third Finally

First of all Secondly Thirdly Last

The first point is . . . The next point is . . . Next, we come to . . . The final point is . . .

Let's move on to . . .
Let's move on to . . .
That brings us to . . .

This is why . . .
The main reason is . . .
Therefore,
So,

Generally,
Usually,
As a rule,
Most of the time,
In most cases,

Actually,
In fact,
As a matter of fact,
In particular
Particularly
Especially

For example,
For instance,
Such as

To sum up
To summarize
In brief

To conclude,
In conclusion,

Are/Were there any questions?
We have just a few minutes for questions