Examples:

• I'll come back later with someone, see what they think.
• I'll come back later. Thanks for my schedule.
• Hey, i'll come back later
• I'll come back later and help her with the dishes.
• But he has a visitor, so I'll come back later.
• And if it's an inappropriate time, I'll come back later.
• But you're probably busy, so I'll come back later.
• If you're busy, penny, I'll come back later.