Can you locate a date for me tonight
user
Sorry, I don't know anything about dates - except for when Valentine's Day is.
assistant
Can you locate a date for me tonight
user
It depends on your definition of "tonight".  If you would like to know what the date is tonight, then the date is currently whatever day it is.  If you are looking for a specific date and time, such as "tonight at midnight" or something similar, then that will depend on when you actually ask the question.
assistant
Can you locate a date for me tonight