Need option to fill values in Jenkins parameterized pipeline script stored in Github whenever it run

I have created a jenkins parameterized pipeline script as below. I have stored it on my Github repository.

properties([parameters([string(defaultValue: 'Devasish', description: 'Enter your name', name: 'Name'), 
                        choice(choices: ['QA', 'Dev', 'UAT', 'PROD'], description: 'Where you want to deploy?', name: 'Environnment')])])

pipeline {
    agent any

    stages {
        stage('one') {
            steps {
                echo "Hello ${Name} Your code is Building in ${Environnment} "
            }
        }
        stage('Two') {
            steps {
                echo "Hello ${Name} hard testing in  ${Environnment}"
            }
        }
        stage('Three') {
            steps {
                echo "Hello1 ${Name} deploying in  ${Environnment}"
            }
        }
    }
}

Then, I have created a jenkins job by choosing pipeline option. While creating jenkins pipeline Under build triggers section, I have checked GitHub hook trigger for GITScm polling checkbox and Under Pipeline section, I have chosen Pipeline script from SCM followed by choosing Git in SCM, providing Repository URL where the above written JenkinsFile script is stored.

Then, Under Github repository settings, I have gone to webhooks and added one webhook where I specified my Payload URL as myJenkinsServerURL/github-webhook/. which will enable a functionality like whenever there will be any push event occurred within the repository, it will run the jenkins pipeline I created above.

Now, the situation is, when I am running this jenkins job from Classic UI by clicking Build with parameters, I am getting a text box to fill my name and a dropdown having list of 4 options ('QA', 'Dev', 'UAT', 'PROD') I gave above in script to choose, in which server I want to deploy my code, then it gets run.

But when I am committing in Github, it starts jenkins pipeline but not asking for parameters value instead just taking default value Devasish in name and QA in server.

What should I do to get an option of filling these details but not from Classic UI.

Thanks in advance.