All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
If a man has hope in others or seeks their help in matters they are capable of doing, it is permissible and does not contradict one's belief in the oneness of Allaah The Almighty. The same ruling applies to seeking support or refuge in a human being in matters which he is capable of doing.
Allaah Knows best.