，谁能根据以下的要求写一篇英语文章，要求10句以上的对话最好14-16句，能帮上忙的帮下忙啊 ，答的好加分

Tang：Hello！This is ABC Company. Manager’s office.
Anna：Hello! This is Anna Brown. I’m a customer of your company.
Tang：Oh, good afternoon Mrs. Brown. This is Tang, Mr. Pan’s assistant. What can I do for you?
Anna：Yes. Can I speak to Mr. pan, please?
Tang：I’m sorry, Mrs. Brown, but Mr. Pan is not in at the moment.
Anna：Oh, what a pity. Would you take a message to him for me, please?
Tang：No problem.
Anna：I’m calling to tell him that I want to discuss with him the new contract we signed last week.
Tang：One minute, please. I’ll take that done. Would you like him to call you back?
Anna：Yes, please. I’ll be available all afternoon.
Tang：So you are calling because you want to discuss with him the new contract you signed last week, and you will be available the whole afternoon. Right?
Anna：That’s right.
Tang：I’ll tell Mr. Pan as soon as he comes back.
Anna：Thank you, Tang. It’s very nice of you. Goodbye.
Tang：You’re welcome, Mrs. Brown. Goodbye.
希望对你有帮助！\(^o^)/~

B: Good morning, ABC company, Pan's office.
A: Good morning, May I speak to Mr.Pan?
B: This is Tang speaking, I am Mr.Pan's assistant. I am sorry that Mr.Pan is not in the office right now. Is there anything I can help you?
A: Hi, Mr.Tang, I am Anna. do you know when will Mr.Pan get back? I want to discuss with him some details of our contract.
B: Nice to hear from you Anna. Mr.Tan have been out for an important meeting. He will be back at about 3pm this afternoon. Do you want me to leave a message to him for you?
A: Sure. Please tell him I called and I will call again at 4pm today and I would like to talk with him about the 28th clause of the contract . Thank you.
B: It's alright. I will tell him as soon as I see him. Is there anything else I can help?
A: No. Thank you very much. Bye
B: Bye.