Phrases Asking for Help Politely

I wonder if you could spare a few minutes to assist me.

Meaning

Polite request, emphasizing time constraint.

Translation language

John: 'I wonder if you could spare a few minutes to assist me with this calculation?'<br>
Alice: 'Sure, let me just finish this first.'
John: 'Of course, let's do it now.'
Alice: 'I wonder if you could spare a few minutes to assist me with this email?'<br>