Implementing a Loop for User Input Validation in Chatflow Application

[zeno980]

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1. Is this request related to a challenge you're experiencing? Tell me about your story.

How can I loop a certain action in the chatflow application? I want the user to input the information they wish to search for. If the input does not include the region information, a prompt should be returned to remind the user until the input includes the region information, after which the next step can proceed.
请问如何在chatflow应用中循环某一动作呢，我想让用户输入自己想搜索的信息，如果里面不包含地区信息，则需要返回提示用户，直到输入的信息中包含了地区信息，才进行下一步

2. Additional context or comments

No response