The unconscious will know if you are playing around or being sarcastic. If there is no response you can notice, then also respond with a thank you. You can also say you understand why it isn't ready to trust you really want to listen, after all, you have ignored it for so long. That is the general structure for that form of dialogue. She describes a very effective process where the dreamer and a friend or the dreamer with themselves can interview the dreamer as though the interviewer was from Mars.
Helps get to good detail of explanation.
Please check out her book if you want more information.