The e-mail system of my company provides out-of-office auto-reply service. I can enter the relevant dates and a message will be generated by the system and e-mailed to those who e-mail me when I am out of office. The message is 'I will be out of office from [date] and will not return until [date]'.
Suppose the message is 'I will be out of office from 14 July and will not return until 20 July', does it mean that the first day of my leave is 14 July and the last day of my leave is 20 July?