I'm making this script: when you type

```
"my name is [your name]"

```

it tells you

```
"hi, [your name]".

```

However, I don't know how to make `[your name]` anything you type. I've made a script with a particular name, but I want it to echo whatever name the user enters:

```
#!/bin/bash
read -p "Say something: " sth
  if [[ $sth = "my name is ralph" ]]
      then
          echo "Hi $(echo $sth | cut -f 4 -d ' ')"
  else
      echo "I didn't understand that"
  fi

```

So this will echo `Hi ralph`, but how to make it echo `Hi [your name]` with whatever name you typed?