Hi,
I have an excel sheet of Order Numbers (PO) which have different items in it. It looks like this:

I have made a manual trigger flow where I enter the respective PO number and the flow updates the Status column for all the line items to 'Received'. Like this:

This is how the flow looks like:


This is how I use it on the Flow app:


The flow is working fine. The only problem is I have to type in the entire PO number. It's usually 9 characters long. I want to have a function wherein I type the first 2-3 letters or any characters of the PO number, it should suggest the same to me and I click on it.
For e.g., I type, "LM100..", I should get the suggestion of "LM1000568" and then I click on it.
I think something like this can be achieved using Power Apps although I've never used them before. Can you tell me how can I use Power Apps to achieve this search function and integrate with the flow? Basically the same flow as above but the auto-fill suggest feature should suggest order number when I type in a few characters. Thanks in advance!