@Ann72 @DAK-Design-and-Home0
I don't think there's anything wrong with the questions, more the way they are communicated, which seems rather abrupt and could be interpreted as prying, even when it's not. I don't think there's any evidence of discrimination there, so the guest maybe overreacted by reporting such, unless we are not hearing the full story?
Just because a guest sends you one-liners, it doesn't mean you have to reply like that. @Sarah977 's approach, for example, is to ask questions without putting the guest on the defensive. I am definitely on the chatty side, but guests don't seem to mind this at all. Quite the opposite.
So, something like this:
Guest-hello my sister and I will be traveling from NY so im not exactly sure what time we will be arriving
Host -Hi (guest name), thanks so much for choosing my listing. What lovely reviews you have! I look forward to hosting you and your sister. What brings you to Montreal, by the way, and have you visited before? Do let me know if you need any advice on things to do and see, or help with practical information like transportation.
Also, you've only booked for one guest, so would you mind changing the reservation to two people? Or, I can do it from my end if you're not sure how and then you just need to accept the changes. No problem re arrival time. Just let me know when you know, as long as you give me a couple of days' notice so that I can make sure I'm here to check you in.
Best wishes..."
I have really never had any issues with this approach or guests feeling the questions are intrusive. The only problems are with non-responsive guests, which this one clearly was not, but that's a whole different matter.