Just like any good human assistant, Amy and Andrew do sometimes need to be corrected if they miss information or misunderstand. If Amy or Andrew make a mistake, you can email them in that same email chain or reply to the invite to correct them.
“Amy, this should be a phone call, not an in-person meeting.”
“Andrew, Kate said 9 am on Monday would work. Please send the invite.”
“Amy, this should be an hour-long meeting. Please update.”
“Andrew, schedule this for the week after next, not this week.”