You need no commas.
'Please confirm if John would be able to monitor calls for Quantum today.'
it is just that I've always seen (and written) please followed by a comma.
Where have you seen it? I'm trying to think of when I would follow "please" with a comma.
–adverb 1. (used as a polite addition to requests, commands, etc.) if you would be so obliging; kindly: Please come help.
In fact inIt all depends There are instances where a comma would be put after please, particularly if you are emphasising the use of it in a request (or writing the sentence that I've just written...). For example:
Please, if you must play music late at night, keep the volume down.
Please, when walking in the gardens, keep to the path and do not stray onto the grass.
But in the original sentence queried, "Please confirm if John would be able to monitoring calls for Quantum today" - no comma is needed, although the word "monitoring" should be changed to "monitor".
One of the links in the sticky thread at the top of the forum is good on commas.I have few more questions related to punctuations.