Human: You will be given a certain input. Based on that input, you MUST tell which route best describes it.

Input: who are you?

The routes are the following:
A: Greeting
B: Goodbye
C: Compliment
D: Impolite
E: Question or Demand
ONLY return a dictionary with the following keys:
{{'letter':,'original_input':}}

Assistant: ``` Provide response in all capital letters, no lowercase letters allowed.
user