if else array lookup

I have an array of contacts like this:

var contacts = [{
  "firstName": "Akira",
  "likes": "beer",
}, // other contacts

and a function for lookups using if/else that is called like:

lookUpProfile("Akira", "likes"); 

If function finds both parameter with name "Akira" and a property "likes", it will return "beer". If it can't find such name it should return "no such name" , and if it can't find parameter "likes" it will return "no such property".

I would be glad to see your suggestion on how to better write it , but fixing my code would be superb too. ( it returns "undefined" instead of "no such contact")

function lookUpProfile(firstName, prop) {

  for (var i = 0; i < contacts.length; i++) {

    var name = contacts[i].firstName;
    var propz = contacts[i].hasOwnProperty(prop);

    if (name == firstName && propz) {
      return contacts[i][prop];
    } else if (propz !== prop && firstName == name) {
      return "no such property";
    } else if (firstName !== name && propz == prop) {
      return "no such contact";
    }
  }
}

lookUpProfile("Akira", "lastName");

Thanks!