Move from point A to point B with a single button press

I'm developing a bounce attack feature just like in sonic and The code so far is looking good. I've got the player only able to bounce attack if its reach a certain jump speed in my code or height logically speaking. However it moves fine but too sudden and i don't want this type of effect.

Initially i want the transition of the movement to be seen at a certain speed rather than a quick "snap" and hes immediately next to the player or in my case enemy

This i believe is just something either to do with the actual movement that i currently have or the time.delta time , but I'm not entirely sure.

This is the code if you want to see it

 function Update () 
 {
     var controller : CharacterController = GetComponent(CharacterController);
     // gets the character controller and contains it information inside variable                                named controller
  
     // Rotate around y - axis
     transform.Rotate(0, Input.GetAxis ("Horizontal") * rotateSpeed, 0);
     
     // Move forward / backward
     var forward : Vector3 = transform.TransformDirection(Vector3.forward);
     var curSpeed : float = speed * Input.GetAxis ("Vertical");
     
     controller.SimpleMove(forward * curSpeed);
     
     
        if(controller.isGrounded) // if the character controller is colliding with anything that is 
        // collidiable 
        {
            controller.height = standardHeight ;
            controller.center.y=0.05; // repositions the character controller to 0.05 on the y axis
            
            
          
         if (Input.GetButton("Jump")) // If the jump button is held down 
         {  
             moveDirection.y= jumpSpeed;
             controller.height = jumpHeight;
             controller.center.y=0.06;
            
            
            
         }
         
         }
         
         if(Input.GetButtonUp("Jump")) // If jump button has been pressed and released
            
         {  
             
            
            controller.height = middleHeight;
          
            controller.center.y =0.04;
            
            
               
         }
         
       
         
        
         
         
         if( jumpSpeed==70.0 && !controller.isGrounded )// if the jump speed if 70.0 and its not 
         // colliding with anything or not on the ground
         
          {
               if(Input.GetButtonUp("Fire2") && gravity ==90.0)// if button has been pressed and released
               // and gravity at this point is 90.0 then do below
               {
                   
                   var step = bouncespeed * extraspeed* Time.smoothDeltaTime;
                   gravity =0;
     
     // Move our position a step closer to the target.
                   transform.position = Vector3.MoveTowards(transform.position,
                   target.position, step);
                   animation.CrossFade("Bounce");
                    }
                     
                     }
                     
                     if(gravity ==0)
                     {
                       gravity =90.0;
                     }
                     
                  
                    
              
              
          
         
           
          
       
           
               
               
               
         
        
        
        
         
    
     
     
     
     controller.Move(moveDirection * Time.deltaTime);
     moveDirection.y -= gravity * Time.deltaTime;
 }