I am writing this message to ask for assistance about the issue I am encountering using google calendar check availability tool on vapi. I created an assistant and attached that tool for checking the availability on my google calendar. I already connected google calendar on the settings, put "America/Denver" on the timezone so that it will not default to UTC on the tool setting. I am using on the prompt {{"now" | date: "%A, %B %d, %Y, %I:%M %p", "America/Denver"}} so that the AI has context about the time accurately returning data. I even explicitly instructed the instruction on my assistant to convert it to UTC before returning back to the user but still it returns using UTC so it's not accurate on providing the availability, how to resolve this issue?