> For the complete documentation index, see [llms.txt](https://docs.chatalog.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.chatalog.ai/crm-quickstarts/customized-flow/flow-blocks/flow-template-reference/event-reservation-flow.md).

# Event reservation Flow

You need to set up custom field in the ‘Contacts’ page on the right side of Chatalog beforehand. Then, return to the ‘Flow’ page to set up a new process.

<figure><img src="/files/XToAXRbpOkUHZY4jX7m1" alt=""><figcaption><p>Contact page</p></figcaption></figure>

<figure><img src="/files/t2Q9K6zJqAh8Rd6xiTD4" alt=""><figcaption><p>Custom Fields page</p></figcaption></figure>

After returning to the flow page, you can create a new process by following the method shown in the image below. (Use the following process blocks: Message Block, User Input, Set Label/Custom Field).”

<figure><img src="/files/Z4Fmcn0UTbbgAbXDiQvi" alt=""><figcaption></figcaption></figure>

Since the user input variable {{age}} is stored in the custom field named ‘age,’ you will get the same result whether you enter the user input variable {{age}} or the custom field {{customFields.age}}.