Putting it all together!

function getUser(id) {
  console.log("Reading a user from a database...");
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      console.log("Received user data...");
      resolve({ ID: id, "Account number": "58721094531267" });
    }, 2000);
  });
}

function getLoans(account) {
  console.log("Request for loan data...");
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      console.log("Received loan data...");
      resolve({ "Most recent": "loan 3", All: ["loan 1", "loan 2", "loan 3"] });
    }, 2000);
  });
}

function getTransactions(loan) {
  console.log("Request for transactions data...");
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      console.log("Received transactions data...");
      resolve(["tran 3", "tran 2", "tran 1"]);
    }, 2000);
  });
}

async function displayTransactions(userID) {
  try {
    const user = await getUser(userID);
    const loans = await getLoans(user["Account number"]);
    const transactions = await getTransactions(loans["Most recent"]);
    console.log(transactions);
  } catch (err) {
    console.log(err);
  }
}

console.log("listening for events");
displayTransactions(1)
console.log("still listening for events!");