text: Barbara: hat phone do you have?
  Darwin: I have Samsung Note 8
  Barbara: What happened to the previous one?
  Darwin: I have sold it
  Barbara: I am planning to sell mine too
  Darwin: which one do you have
  Barbara: I have Oppo A37
  Darwin: I will ask my brother to help you
target: Darwin uses Samsung Note 8. He sold his last phone. Barbara will sell her phone too. She uses Oppo A37. Darwin will ask his brother to help her.