text: Ann: Hey, are you free now?
  John: In a moment
  Mike: Hi, I will be avail in 5 mins
  Mike: What's up?
  Ann: Let's have a conference call
  Ann: That would be easier
  John: Ok, I'm ready
  Mike: Let's start at 10, ok?
  Ann: Sure.
target: Ann wants to have a conference call with John and Mike. They will start at 10.