Ok. Perfect, you have been really clear.
In the case they ask only what are the suitable time for Fryday 11, and I can only from the 5 pm, what do you think about something similar:
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Dear Ms. ***,
Thank you very much for the opportunity of a personal interview.
I will be delighted to meet Mr. *** and Mr. yyyyyy in your Verona office from 5 pm on 11th of May, as I have a previous appointement in Milan at 12:00 noon.
I look forward to hearing form you.
Yours sincerely,
***
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Is less formal? what do you think about?