diff --git a/src/main/java/seedu/address/logic/commands/CreateCommand.java b/src/main/java/seedu/address/logic/commands/CreateCommand.java
index df7cff336c9..22982a986f8 100644
--- a/src/main/java/seedu/address/logic/commands/CreateCommand.java
+++ b/src/main/java/seedu/address/logic/commands/CreateCommand.java
@@ -45,12 +45,12 @@ public class CreateCommand extends Command {
             + PREFIX_SYMPTOM + "SYMPTOM "
             + PREFIX_DIAGNOSIS + "DIAGNOSIS "
             + "Example: " + COMMAND_WORD + " "
-            + PREFIX_NRIC + "S1234567A "
+            + PREFIX_NRIC + "S0123456A "
             + PREFIX_NAME + "John Doe "
             + PREFIX_PHONE + "98765432 "
             + PREFIX_EMAIL + "johnd@example.com "
             + PREFIX_ADDRESS + "311, Clementi Ave 2, #02-25 "
-            + PREFIX_DATEOFBIRTH + "01-01-1990 "
+            + PREFIX_DATEOFBIRTH + "1990-01-01 "
             + PREFIX_SEX + "M "
             + PREFIX_STATUS + "PENDING "
             + PREFIX_TAG + "Long term medication "
@@ -79,7 +79,7 @@ public CommandResult execute(Model model) throws CommandException {
         }
 
         model.addPerson(toAdd);
-        return new CommandResult(String.format(MESSAGE_SUCCESS, Messages.format(toAdd)));
+        return new CommandResult(String.format(MESSAGE_SUCCESS, Messages.formatRead(toAdd)));
     }
 
     @Override
diff --git a/src/main/java/seedu/address/logic/commands/DeleteCommand.java b/src/main/java/seedu/address/logic/commands/DeleteCommand.java
index 978138bf653..4c5a748e1c4 100644
--- a/src/main/java/seedu/address/logic/commands/DeleteCommand.java
+++ b/src/main/java/seedu/address/logic/commands/DeleteCommand.java
@@ -43,7 +43,7 @@ public CommandResult execute(Model model) throws CommandException {
         //second checks if the NRIC is in the list
         Person personToDelete = persons.filtered(person -> person.getNric().equals(targetNric)).get(0);
         model.deletePerson(personToDelete);
-        return new CommandResult(String.format(MESSAGE_DELETE_PERSON_SUCCESS, Messages.format(personToDelete)));
+        return new CommandResult(String.format(MESSAGE_DELETE_PERSON_SUCCESS, Messages.formatRead(personToDelete)));
     }
 
     @Override
diff --git a/src/main/java/seedu/address/logic/commands/UpdateCommand.java b/src/main/java/seedu/address/logic/commands/UpdateCommand.java
index 1fa311929a3..aa1efceb407 100644
--- a/src/main/java/seedu/address/logic/commands/UpdateCommand.java
+++ b/src/main/java/seedu/address/logic/commands/UpdateCommand.java
@@ -48,15 +48,15 @@ public class UpdateCommand extends Command {
     public static final String COMMAND_WORD = "update";
 
     public static final String MESSAGE_USAGE = COMMAND_WORD + ": Updates the details of the person identified "
-            + "by the index number used in the displayed person list. "
+            + "by the NRIC. "
             + "Existing values will be overwritten by the input values.\n"
-            + "Parameters: INDEX (must be a positive integer) "
+            + "Parameters: NRIC "
             + "[" + PREFIX_NAME + "NAME] "
             + "[" + PREFIX_PHONE + "PHONE] "
             + "[" + PREFIX_EMAIL + "EMAIL] "
             + "[" + PREFIX_ADDRESS + "ADDRESS] "
             + "[" + PREFIX_TAG + "TAG]...\n"
-            + "Example: " + COMMAND_WORD + " 1 "
+            + "Example: " + COMMAND_WORD + " S1234567A "
             + PREFIX_PHONE + "91234567 "
             + PREFIX_EMAIL + "johndoe@example.com";
 
@@ -98,7 +98,7 @@ public CommandResult execute(Model model) throws CommandException {
 
         model.setPerson(personToUpdate, updatedPerson);
         model.updateFilteredPersonList(PREDICATE_SHOW_ALL_PERSONS);
-        return new CommandResult(String.format(MESSAGE_UPDATE_PERSON_SUCCESS, Messages.format(updatedPerson)));
+        return new CommandResult(String.format(MESSAGE_UPDATE_PERSON_SUCCESS, Messages.formatRead(updatedPerson)));
     }
 
     /**