How to let user know that they won’t be charged until the last step?

Let's say I have a booking app (for a room) and before being charged, the user needs to go through a couple of steps to confirm their details. Only at the last step will they be asked to "Pay Now".

AirBnB just uses "Next" with the Total Price is indicated in every page. This text changes to "Confirm Booking" at the last step.

Is this enough to tell the user that they can safely go through all the details first without being charged?