input: Write a python function to create a greeting message using a template.
  assert template({"greeting": "Hello", "message": "Welcome to the team", "name": "Alice"}) == "Hello, Alice! Welcome to the team"
  assert template({"greeting": "Hi", "message": "How are you doing?", "name": "Bob"}) == "Hi, Bob! How are you doing?"
  assert template({"greeting": "Good morning", "message": "Have a great day", "name": "Charlie"}) == "Good morning, Charlie! Have a great day"
output: def template(data):
      return f"{data['greeting']}, {data['name']}! {data['message']}"