Use a dummy bulb and you can have 99 responses
or use a switch template to trigger the input select
so for each “value” in your input_select create a switch template
value:
value_template: >
{% if is_state('< name of input select>','value') %}
true
{% else %}
false
{% endif %}
turn_on:
- service: input_select.select_option
data:
entity_id: <name of input select>
option: "value"
turn_off:
These switches will stay in sync with your input_select and can be called from Alexa. So if the input select is set to the first value only one switch template would be on the other switches would be off. If you turn a switch on it will change the input select and all the other switches would turn off.