I am not exactly sure what you mean by a good phrase however i can help you with making parents feel more confident and compfortable with you.
A good parent should be looking for some one who is on time.
CPR certified is a plus or knowledge of.
Great refference and a good resume.
Takes an interest in their childs life as well as trys to keep them involved and interested in the time that the child spends with them and away from the parents.
Ask for instrustions and respects their wishes.
Is not over bearing.
Healthy snacks and engaging activitys are a major plus too.
Trys to bring learning into thier time together and values the envirionment the child is in.
Ask questions. Ask abot emergency wishes and allergys.
ALll these thing will at least help you get a client,
Good Luck Faolan Blood
a slogan woww