Event with quota (limited places)

Hi every one,

I have a requirement to implement an event in Marketo that will be pushed into salesforce, the idea is to let sales people to add and invite their best client into it.

the issue is that, once we send out invitations, client should select and confirm their registration for the event, once the number of places has been reached, we want that next clients who connect to the form, will get a message that all places have been booked  and they will not be able to registre.

I want to share the informations with sales people in Salesforce in report ( the event, clients that they get their registration to the event)

Thank you,