currently you will have to use 1.5 builder, which is a linear conversation. Then you can use 'Extract Fields' to get the data from the conversation and then use an action for your calculation. Best to use n8n. zapier, make, pabbly to do that and return the information. Google has APIs for distance on trips, so should be relatively simple. That being said, whenever actions are being done within a call, it does take time to execute and return the information.