Place a real booking with no account. The car is held for 30 minutes and a payment link comes back; the person you are helping opens it and pays the full fare, and the trip confirms itself the moment the money lands. You cannot complete the payment yourself, so hand them the link. Quote it first so you can tell them the price. To change or cancel afterwards, text +1 424-487-4875 — the house's automated line, answered around the clock — or call +1 310-757-5588 to reach the live concierge.