human
I have a tissue box with about 120 tissues in it. I use about 2 tissues a day. When should I buy a new box? Please, provide a date.
gpt
You will need to buy a new box of tissues in about 60 days, though I will need to know today's date in order to give you the exact date.
human
Assuming today is January 1st 2023, when will I need to buy a new box of tissues?
gpt
You would exhaust your box of tissues on March 2nd 2023.  

However, I would recommend buying a new box of tissues a few days before this date, as you indicated you have "about" 120 tissues, instead of exactly 120 tissues.  You could run out earlier than March 2nd if there was any less than 120 tissues in the box at the beginning of January 1st.

I might also point out the same for the number of tissues per day being "about" 2. If this average is not stable over a two month period, you may run out before March 2nd.  Again, I recommend stocking up early.

Is there anything else I can help with?