Asking for a Receipt

You need a receipt for your records or for a reimbursement.

You
¿Me da un recibo, por favor?
meh dah oon reh-SEE-boh, por fah-VOR?
Can you give me a receipt, please?
Clerk
¿Quiere un recibo simple o una factura con sus datos?
KYEH-reh oon reh-SEE-boh SEEM-pleh oh OO-nah fahk-TOO-rah kohn soos DAH-tohs?
Do you want a simple receipt or an invoice with your details?
A "factura" is a formal tax invoice, often needed for business expenses. A "recibo" or "comprobante" is a basic proof of purchase.
You
Una factura, por favor. Necesito el comprobante con mis datos para el reembolso.
OO-nah fahk-TOO-rah, por fah-VOR. neh-seh-SEE-toh el kohm-proh-BAHN-teh kohn mees DAH-tohs PAH-rah el reh-ehm-BOHL-soh.
An invoice, please. I need the receipt with my details for a reimbursement.
"Comprobante" is another word for proof of payment. In Mexico, formal invoices are electronic ("factura electrónica") and may require your tax ID.
Clerk
Claro. Deme su nombre y correo electrónico y se la envío.
KLAH-roh. DEH-meh soo NOHM-breh ee koh-RREH-oh eh-lehk-TROH-nee-koh ee seh lah ehn-VEE-oh.
Sure. Give me your name and email and I'll send it to you.