Should an if-statement end with else in a function that asserts the values

Suppose I have a function with a variable drinks whose values might be extended later on:

def what_to_drink(drinks):
    assert drinks in ['coffee','tea'], "Invalid 'drink' value. Please choose between 'coffee' or 'tea'."

    if drinks == 'coffee':
        print("I don't drink coffee, I drink tea my dear")
    elif: drinks == 'tea':
        print("I am an English man in New York")

Since the values for drinks might be extended, it seems to make sense to use elif instead of else. However, should the if-statement end with an else-statement? This seems redundant since the assert operator already serves as a gatekeeper for unwanted values. However, without the else-statement, the logic seems incomplete.