flex query dialog or end user search wizard?

I am hoping there is a component or strategy someone can recommend for presenting the user in a flex (flash builder 4) application a search wizard or query dialog where they are presented a list of fields and can choose one and specify search criteria. This will be used to call a web service and return data to a flex data grid.

For example, if I have a client data grid/database they might see first name, last name, city, state, zip, etc. They could click first name, type a value in a box. Ideally then be able to click additional fields and specify values. Click search and see their results in a datagrid or similar.

I am used to having these helpers in other development/database environments, so I thought I should ask.

I am thinking if I need to create this from scratch, I will either use a combobox? type drop down where they can select multiple items and type a value next to each, OR possibly I will have to create some kind of custom d开发者_如何转开发ialog with multiple fields in it. Looking for ideas/thoughts/examples?