work in pairs, one as A, the other as B. A makes polite requests starting " Would" you...." or " Could you...." . B says Yes
pass this tray to the passenger by the window.
make a hotel reservation for....
cencel my appointment with .....
make a telephone call to....
send a fax to.....
pass the milk and sugar to.....
put your seat back upright.
show me how to operate this machine.
help me fill in this form.
book a flight to...