If the person asking the question lives in Ohio, they may actually be talking about London OH (or Dublin OH). Some people in neighbouring states may mean the same, though they will be more likely to mention the state. However, how close should you be to London, OH even within the state to mean the Ohio one and not the UK one? How close is close enough? Is a few hours of driving close enough? A 3 hour flight? What if I'm roughly at 6 hours from London OH and 7 hours from London UK?
Further, if the person is a British expat in Ohio, especially if they are working for a multinational business (or not), they would more likely mean London UK. German expats, though? Russians? Or an Irish person who lives in Amsterdam having some relatives in Ohio US, looking to book a flight to Dublin. Etc. etc.
There are so many contextual layers here that even human assistants can occasionally get it wrong, and without the context the task becomes insurmountable for the "AI" algorithms. That is not to say virtual assistants are useless, just that selling them as "AI" is a big lie, bigger than even those who market these algorithms as "AI" think it is.