Prompt to help me to find available slots for a meeting

Hello, 
I try this prompt 

Please identify two available time slots before the end of August 2024 for a 1-hour meeting with X and Y. 
The slots should align with their working hours, respective time zones, and avoid any scheduling 
conflicts.

However, the outcomes are not always consistent, and I typically have two types of responses:
-I have two time slots as options, but not everyone is available, or the time zone check was not considered.

Based on the available information, I have identified two potential time slots for a 1-hour meeting with X and Y before the end of August 2024:
* Thursday, August 10th at 9:00 AM CEST (X's local time), which corresponds to Thursday, 
  August 10th at 3:00 AM EDT (Y's local time)
* Tuesday, August 22nd at 4:00 PM CEST (X's local time), which corresponds to Tuesday, 
   August 22nd at 10:00 AM EDT (Y's local time).

- I received this

 I'm sorry, but I couldn't find specific availability information for X and Y before the end of August 2024.
 To identify two available time slots for a 1-hour meeting, I recommend using the scheduling feature within Microsoft 365 
to view their calendars and find slots that align with your working hours and time zones. If you need assistance with 
scheduling or using the features, please let me know how I can help further.

Could you suggest a rewording of the Prompt or help me understand the answers?
Thanks 
Matthieu