Out of the box you can't do that. You can try this app https://marketplace.atlassian.com/apps/1225519/elements-publish-create-confluence-pages-from-jira?hosting=cloud&tab=overview which I think that it supports the Sprint field https://marketplace.atlassian.com/apps/1225519/elements-publish-create-confluence-pages-from-jira?hosting=cloud&tab=overview and hopefully you can acquire the sprint dates.
Thanks for mentioning Elements Publish @Alex Koxaras _Relational_ !
@Jennifer Oneill Just to add on to Alex's answer, Elements Publish allows you to create Confluence pages with information from Jira issues. You would need to decide on the issue you use to trigger the page creation, and the sprint dates in the issue would then be published to the Confluence page. You can use a synchronization option as well so that if the sprint dates change in the issue, they are automatically updated on the Confluence page.
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