Automatic Purchase is a feature where the system automatically books the ticket for the chosen flight before the end of the FareLock hold period, but only if the customer select this option while purchasing FareLock. The system will use the same credit card used to buy FareLock. However, if the passenger’s plan get changed after the automatic purchase of ticket, they get a 24 hour window to cancel the ticket and get a full refund under United Airlines’ 24-hour flexible booking policy.