/**
* Method initializes a process of saving a booking
*
* @param comment booking comment
* @param startTime appointment's start time
* @param endTime appointment's end time
* @param userId
* @param staffScheduleId id of connection between staff and schedule
*/
public bool bookAppointment(string comment, string startTime, string endTime, int userId, int staffScheduleId)
{
return(repo.bookAppointment(comment, startTime, endTime, userId, staffScheduleId));
}