I am looking to use Function Tool calling but when I use it takes 12-15 seconds to get the response a

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I am trying to run a tool call which gets arguments and fetch data from Google Calendar API checks a certain DateTime and then return availability and then book the event so its calling 2 APIs which takes time to give an output can I put data to get a response under 10 seconds because platforms like Manychat and Interakt dont allow API call after that.