求一篇20句话左右的英语对话两个人的对话,任何话题都可以,20句左右每句话长点

A:Hello,John!What were you doing at Chemistry class earlier?You didn't look at the teacher the whole time!
B:I have something cool.Look,this is my new 3G mobile phone.I just cannot stop playing with it!
A:What is 3 G mobile phone?
B:It is so popular now,I cannot believe you haven't heard of it.With 3 G mobile phones,you can send text message,make video calls and watch mobile TV.
A:Wow,cool!Show me how to watch mobile TV.It's NBA time!
B:Sure.You just need to press one button and choose the channel you want to watch.It is quite easy.
A:No wonder it is so popular with college students.I should save money now.Then I can have a cute and powerful 3G phone by summer.I can watch NBA whenever I go too!
B:To tell you the truth,I was watching NBA at Chemistry class,it's like owning a portable TV!
A:Yeah,I almost forgot.Although it is a lot of fun,you cannot be distracted in class.And students using 3 G mobile phones may make a lot of noise in the library and disturb others.
B:You are right.I should not have done that.Can you help me about Chemistry today?
A:As long as you don't play it in class anymore!