An Alexa Skill Builder has created a taxi hiring skill. The skill needs to find out when the customer wants a taxi, where the customer is traveling from, and where the customer wants to go. The Builder is currently asking each question individually, in the following order: “Where do you want to take a taxi from” “Where do you want to take a taxi to” “When do you need a taxi” To ensure the voice interaction is flexible, how should this information be gathered regardless of the order in which the user provides it?