Instant speaking practice or a scheduled conversation?
Use an instant call for a small task you can do now. Schedule ahead when you want to choose who you meet and give both people a chance to think about the subject.
Set a time both people can keepGive an unplanned call a finish line
If you have a spare moment, tell someone what went wrong with your lunch order and see if they can explain it back. You can do that with someone you’ve just met. If nobody suitable is free, record the story for yourself and stay within the time you have.
Give a scheduled call a reason to exist
Reserve time with someone whose experience connects to a question. A person who has worked in a kitchen might have a story about orders that went wrong. Bring your story and ask for theirs. If you want to return, check whether the schedule would still work on an ordinary week.