text: Tony: i will be late tomorrow
  Tony: perhaps i will have to stay longer at work
  Lisa: why?
  Tony: we are finishing huge project
  Lisa: so maybe we will meet another day?
  Tony: no, just give me some time if i will be later than 7
  Lisa: ok, so let's meet at 8, you will be on time and i will not be waiting for you
  Tony: ok
target: Tony and Lisa were supposed to meet tomorrow at 7, but he will have to stay longer at work due to a project he's finishing. They decide to meet at 8.