How to exit an if else loop without continuing with the other lines of code?

This is my code

prompt = 'Which Schedule Should Be Used? (1/2) \n';
x = input(prompt);
if x == 1
    connection = connection_schedule1();
elseif x == 2
    connection = connection_schedule2();
else
    fprintf('Unrecognized Input \n')  
end

connection_schedule1 and connection_schedule2 are two functions that make a schedule for my code. If someone enters any other term than 1 or 2, I would like to display the message 'Unrecognized Input' and exit without proceeding through the next lines of code. Is this possible? Currently, my error message is displayed but it shows also other error in the succeeding lines of code that requires the schedules that I input. It would also be helpful if I can bring back the execution to the first line shown here if an invalid input is provided. Many thanks in advance.

[Stephen23]

"It would also be helpful if I can bring back the execution to the first line shown here if an invalid input is provided"

Use a while or a for loop.