Peter Stone,
Peter, I would like to know if I could ask for a casual leave of absence for one day on April 4th, this Wednesday.
This morning I received a telephone call from my dentist, urging me to come to his practice for immediate treatment of my teeth. I have been experiencing a stinging pain, depriving me of my sleep during the past fortnight. The situation could worsen, should infection occur.
Concerning my workload As Wednesday is not as busy as the other weekdays, I think a one-day leave this Wednesday may be the best solution. I apologize for the inconvenience my absence from work may cause.
Thanks. I will call you at 130p.m. or you can call me at any time.