“Your the away team, do you want Heads or Tails?”
Then, to whoever wins the toss:
”You can have choice of ends, or kick off”
Then, if they choose ends, to the other captain “Ok - you’re kick off
or if the toss winning team choose to kick, to the other captain say:
”You have choice of ends”
(If sides are changing ends, give the whistle a blow, with your hands in the air do a sort of turning motion to indicate change ends)
To both captains: “Enjoy the game gents”
… and thats it.