对于以下的内容编写一段情景对话.（英语）Your computer has started to have problems（the screen keeps on freezing）. Phone the help desk.

Help Desk: Good morning, Microsoft Technical Support, How can I help you?
(一般情况下，help desk接到电话，会先自报家门。)
You: Good morning, This is Jhon speaking. May I know whom I am talking to?
Help Desk: Ofcourse, sure, This David.
(问清对方名字，如果此次问题没有得到妥善解决，下次再打电话的时候，可以转接到这里。另外，在交流过程当中称呼对方的名字，会使交流更顺畅）
You: Thank you, David. I have a problem of using my computer, need your help.
Help Desk: All right, and .. what seems to be the problem ?
You: The screen keeps on freezing, it drives me crazy.
Help Desk: I see, what it looks like on your screen? Is it a blue screen ?
You: No, it is not a Blue screen, it is just frozen when I am using it.
Help Desk: Okay, did you opened too many windows ? And are you downloading a lot at the same time ?
You: Yes, I am downloading, but not really much, just one mp3 about 5 Megabytes. I dont think it is the reason that causes my screen frozen. And there is not many windows I opened up.
Help Desk: Dont worry, I am trying to figure out what makes your computer being frozen, but I need to ask you few more questions.
You: All right.
Help Desk: What anti-virus software are you using? And is there a screen saver? And one more thing... do you find any overheating problem recently on your computer？
You：I am using XXX anti-virus which is currently installed, I dont have a screen saver, and there is no overheating problem.
Help Desk: Your anti-virus is currently installed? which one do you use before using current anti-virus software?
You: I dont have one before.
Help Desk: I assume that you installed a anti-virus software because you find that you computer getting problems recently ?
You: yes, How do you know it ??
Help Desk: Here is the solution: update your anti-virus software immediately, and run your anti-virus to scan your computer completely. I think you got virus on your computer and it took alot memories of your CPU (central process unit).
You: oh, do you realy think so?
Help Desk: Yes, you do what I said. How ever, there could be other problem when you do this since I assume you have virus on your computer. If it is not working, I suggest to reinstall your system.
You: Okay, I will try it. May I have your reference number in case it is not working at all, I can come back to you.
Help Desk: All right, my reference number is 20998, David. Just call this service number and refer to me, you will talk to me again.
(这是比较正式的情况下，询问对方的编号，这样可以在下次打电话的时候，接线员可能不知道David这个名字，你可以告诉他David的编号即可）。
You: Thank you very much for your time , David.
Help Desk: You are welcome, is there anything else I can do for you?
You: No, thanks.
Help Desk: Okay, have a nice day, Bye.
You: Bye Bye.
这个是我根据个人经历逐字逐句的写出来的对话，不知道你具体有何用途，希望能够帮到你。
如果对话过长，中间部分可以根据自己的需要修改。
另外：pls do not feel hesitate to contact me for further information.

Good afternoon,welcome to the XXX help desk.This is Sarah.May I help you?
Good afternoon.This is Howard.My computer has started to have problems.The screen keeps on freezing.
Ok,don't worry,Howard.I will try to help you to figure out.Is it frozen now?
Yes.
Is a single programme or the entire system frozen?
uh...I have no idea.How can you tell?
Ok.Can you move your mouse on the screen?Is the mouse pointer visible and moved?
No.It is stationary on the screen.
I see.It means the entire systems is frozen.Now you need to reboot the computer.To do so,hold down the "Ctrl" and "Alt" keys.While holding both keys down,press the "Delete" key twice.This should shut down the system and automatically restart it.
Hold on..."ctrl"..."Alt"..."Delete"...It didn't response.
It happens sometimes.Don't worry,please try again.
Ok...uh...I tried..it still remain frozen.
Don't worry.Then we have to make a hard shut down by pressing the power button until the computer completely shuts down.
Ok.What now?
Well done,Howard.Lets wait for 2 mintutes...Now turn the power on once more.
Uh...Hold on..Ok...it runs again.
Excellent.Now we are going to check out the reason of freeze-up.The first step to take is looking at any recently installed software.Did you install any programs such as freeware or shareware?These programs often contain malware that can damage the system.
No.I didn't install any new software recently.
Good,we can leave it out for consideration.Next,update and run the antivirus program installed on the computer.Check the Windows website and download any updates.
I checked this this morning.No virus nor latest important updates.
Ok.Then you will need to check the available space on the computer's hard drive and use the built-in error checking and cleaning tools.
I don't know how to check it out.
Don't worry.Go to "My Computer," right click "Local Disk (C:)" and click "Properties." On the "General" tab,make sure there is sufficient free space.Are you following me?
Yes.It seems not too many free space here.
Well done.I think this is probably the main reason.The "Disk Cleanup" tool will free more space by deleting unnecessary files.Click the "Disk Cleanup" button to run the tool.Do you know where the "Disk Cleanup" is?
Yes...wow,there are voluminous saved temporary files.Ok.They were deleted now.
Excellent,Howard.I'm sure your computer will run better.Is there anything else I can do for you?
That's all.Thank you Sarah.
You are welcome,Howard.Please feel free to call us again if you have any problem in the future.
Sure.Have a nice day,bye-bye.
You too.Bye-bye.