The quotes are the following:
1. Act 1, Scene 1
After their encounter with the three witches, best friends Macbeth and Banquo talk about their future as told by the witches: Macbeth will be king and Banquo's descendants will be kings as well.
MACBETH
Your children shall be kings.
BANQUO
You shall be king.
MACBETH
And thane of Cawdor too: went it not so?
BANQUO
To the selfsame tune and words.
2. Act 2, Scene 1
Before murdering Duncan, Macbeth meets Banquo, who tells him he dreamt about the three witches and suggests they have told Macbeth some truth. Macbeth lies and replies he has not thought about them, but as soon as he is alone he heads to the king's chamber.
BANQUO
All's well.
I dreamt last night of the three weird sisters:
To you they have show'd some truth.
MACBETH
I think not of them:
Yet, when we can entreat an hour to serve,
We would spend it in some words upon that business,
If you would grant the time.
BANQUO
At your kind'st leisure.
3. Act 3, Scene 1
Macbeth invites Banquo to a fancy banquet as his guest of honor. Although Banquo has duties with his son in the afternoon, he promises to attend the feast. With this information, Macbeth then plans to kill both. The reason is, after the witches' prediction, Banquo's noble and honest character and his son Fleance are a threat to the throne.
MACBETH
To-night we hold a solemn supper sir,
And I'll request your presence.
BANQUO
Let your highness
Command upon me; to the which my duties
Are with a most indissoluble tie
For ever knit.
MACBETH
Ride you this afternoon?
BANQUO
Ay, my good lord.
MACBETH
We should have else desired your good advice,
Which still hath been both grave and prosperous,
In this day's council; but we'll take to-morrow.
Is't far you ride?
BANQUO
As far, my lord, as will fill up the time
'Twixt this and supper: go not my horse the better,
I must become a borrower of the night
For a dark hour or twain.
MACBETH
Fail not our feast.
BANQUO
My lord, I will not.
MACBETH
We hear, our bloody cousins are bestow'd
In England and in Ireland, not confessing
Their cruel parricide, filling their hearers
With strange invention: but of that to-morrow,
When therewithal we shall have cause of state
Craving us jointly. Hie you to horse: adieu,
Till you return at night. Goes Fleance with you?
BANQUO
Ay, my good lord: our time does call upon 's.
MACBETH
I wish your horses swift and sure of foot;
And so I do commend you to their backs. Farewell.