I'd like to have a few words with you.
Could I have your ear for a moment?
Is there something that I should pay attention to for you?
Could you look at that and give me some advice?
Can you spare me a few minutes? 2, 3
Have you been served?
Could I have you tell me your request?
Would it be possible to have you agree to my request?
May I have a word in your ear?
Do you want me to give you a hand?
Do you want some help?