That's tricky and I've gotten caught out on that in the past - as soon as a booking is confirmed, they kind of vanish until the day before they arrive (not having seen my requests for what time, so I'm therefore unable to greet them myself etc). So now I ask each person what time they plan to arrive and leave on their proposed dates before I confirm/accept their booking...and I chase up closer to the time to reconfirm...but at least that way there is a record of the conversation and it's always there for me to check ahead so I can arrange my diary.