answer: Betty finds the salary rate in the agreement is different from what Mr. Smith said in the interview. Mr. Smith explains and will modify it, then Betty's willing to sign the agreement.
documents: #Person1#: Well, Betty. Since you'Ve done well during the probation period, we decided to employ you formally. And now we need to sign the formal agreement.
  #Person2#: Thank you very much, Mr. Smith. I am very happy that I'll be a member of your team. May I see the agreement first?
  #Person1#: Of course. If you have any questions, just bring them out.
  #Person2#: OK, thank you. Well, I find that the salary level in this agreement is not like what you have said in the interview. Can you give me some explanations?
  #Person1#: Well, it's like this, during your first year, you will enjoy this salary level, a year later, we'll increase your salary by 20 %.
  #Person2#: Can we add up this item to the agreement?
  #Person1#: Yes, maybe the personnel department made some mistakes in making the agreement. Do you have any other questions?
  #Person2#: No, thank you. Shall we sign the agreement now?
  #Person1#: Yes, welcome to our company. I hope we can cooperate happily.
  #Person2#: Thank you. I'll work hard.