<apex:form id="theOne">
      <apex:pageMessages />
      <apex:pageBlock >
          <apex:pageBlockButtons location="bottom">
              <apex:commandButton value="Submit" action="{!Save}" rerender="theOne"/>
          </apex:pageBlockButtons>
          <apex:pageblocksection >
              <apex:pageblockSectionItem >
                  <apex:outputLabel value="Name :"/>
                  <apex:inputField value="{!event.Name__c}"/>
              </apex:pageblockSectionItem>
              <apex:outputLabel />
              <apex:pageblockSectionItem >
                  <apex:outputLabel value="Business Name :"/>
                  <apex:inputField value="{!event.Business_Name__c}"/>
              </apex:pageblockSectionItem>
              <apex:outputLabel />
              <apex:pageblockSectionItem >
                  <apex:outputLabel value="Telephone Number :"/>
                  <apex:inputField value="{!event.Telephone_Number__c}"/>
              </apex:pageblockSectionItem>
              <apex:outputLabel />
              <apex:pageblockSectionItem >
                  <apex:outputLabel value="Email Id :"/>
                  <apex:inputField value="{!event.Email_Id__c}"/>
              </apex:pageblockSectionItem>
              <apex:outputLabel />
              <apex:pageblockSectionItem >
                  <apex:outputLabel value="Reason For The Call :"/>
                  <apex:inputField value="{!event.Reason_For_The_Call__c}"/>
              </apex:pageblockSectionItem>
              <apex:outputLabel />
              <apex:pageblockSectionItem id="pbsectionitem">
                  <apex:outputLabel value="Select Date:"/>
                  <apex:inputField value="{!event.ActivityDate}"/>
              </apex:pageblockSectionItem>
              <div id="datepicker" />
              <apex:pageblockSectionItem >
                  <apex:outputLabel value="Time Slot :"/>
                  <apex:inputField value="{!event.Time_Slot__c}"/>
              </apex:pageblockSectionItem>
              <apex:outputLabel />
              <apex:pageblockSectionItem >
                  <apex:outputLabel value="Notes & Comments :"/>
                  <apex:inputfield value="{!event.Description}"/>
              </apex:pageblockSectionItem>
          </apex:pageblocksection>
      </apex:pageBlock>
  </apex:form>