The same day booking issue

Hello Folks,

Recently I notice something about same day appointment with this plugin! let me explain it with an example:

lets say today is Monday at 9:00 a.m and there is no booked appointment for today, a client wants to book an appointment, so they choose the service they need than when they want to choose the available times, they can choose just from 14:00 p.m to end of the business day! so the question is what about those morning time from  9:00 to 13:00 ?  can someone help me to get out of this issue?