求高手帮写一下英语对话~（不用太长）感谢万分~~~!

求高手帮写一下英语对话~（不用太长）感谢万分~~~!
Student A :answer the phone,giving your name.
Student B:ask to speak to a friend.
Student A:say you'll check whether Student B'sfriend is there and ask Student B to wait.
Student B:agree to wait.
Student A:explain why Student B's friend can't come to the phone and ask if you can give them a message.
Student B:say yes and give a message to change an arrangement.
Student A:check that you've understood.
Student B:confirm that Student A is right
Student A:say you'll give Student B's friend the message.
Student B:thank student A and say goodbye