How do update text field with selected text from dropdown

Question

How do i update data-reason attribute with selected value from drop down in my input element?

<table class='reorderTablerow'>
<tbody>
<tr>
<td>
<input data-item='item A' data-itemid='001' data-reason='' class='quanityborderinput' type=text/>
</td>
<td>
<select>
<option>Select reason</option>
<option>Out of stock</option>
<option>Damaged item</option>
</select>
</td>
</tr>
<tr>
<td>
<input data-item='item B' data-itemid='002' data-reason='' class='quanityborderinput' type=text/>
</td>
<td>
<select>
<option>Select reason</option>
<option>Out of stock</option>
<option>Damaged item</option>
</select>
</td>
</tr>
</tbody>
</table>