Come help me. I can make a phone call first and clap my hands and then you can tell him. He will understand and it is more efficient.
Sign language manuscript
you‧together, together with; along with‧to help; to help each other out‧to clap‧to finish (doing something), to end; finished, completed; be done‧you‧to dial; to make a phone call∩to talk‧‧easy; simple