Me : "Regular phone greeting"

Client : "Eeeeeehh.. yes. [intelligible] with [therapist name]?"

Me : "Oh, yes, [therapist name] is working today, but unfortunately she is completely booked up. Would you like me to check a different day for you?"

Client : "Eeeeeeehhhhhh.... no. no... i'll call back."

Me : "I can also place you on our wait list, and if anything opens up with [therapist name], we can give you a call back."

Client : "no. no... eeeeeeehhhhhhhh.... i'll call back."