I have this situation in Odoo 8:

Model x:

customer_name: fields.char(),

customer_email: fields.char(),

odoo_partner_id: fields.many2one('res.partner', 'Contact from outside')

I need put  a button on my "x.form.view" to call a res.partners list on wizard.

That wizard must be filtered by possible options  of my res.partners with

['name, 'like', same customer_name] or ['email' , 'like', 'customer_email' ],

and give me the option so select what i want and complete  x.odoo_partner_id field,

If don't exist any partners with that condition create a new one.