I am trying to see if I can use the model with RetrievalQA tasks (

In other models like falcon-7b instruct I used to provide a prompt like this,

Use the following pieces of context to answer the question at the end. If you don't know the answer, just say that you don't know, don't try to make up an answer.

{context}

Question: {question}
Answer:

I am bit confused if I should use pre-trained or chat variant for document QA tasks. In the huggingface model card there was mention of using chat variant for Q&A tasks since it's instruction tuned.

Can you provide an example prompt I can send for chat variant if it can be used for document Q&A tasks? I couldn't find much in the repo for this task.