Hi. Can you please book me an appointment with a mechanic. 
Why?
My car is making a funny noise when the AC is running.
Ok. Do you have a preferred mechanic. 
I do.Intelligent Auto Solutions
Intelligent Auto Solutions it is. What is the preferred appointment time?
First thing tomorrow morning.
How is 8am.
8am is no good. What else is available?
They also have a 740am.
730am is too early. Anything later.
Yes. The website says they also have a 9am appointment available.
That is perfect. 
Ok, we just need a few details. Describe the exact problem.
When I turn on the air conditioning, a loud screeching noise is heard under the hood.
How long has it been happening. 
A couple days. 
Does everything work. 
Yes, it is just noisy. 
Ok. It is booked. You have a 9am appointment tomorrow at Intelligent Auto Solutions to look at your AC. The inspection fee will be $50 plus any repair costs.