Fluent English to Spanish - Message Translation

Hi there
We have an urgent need for a short message in English to be translated perfectly to Spanish.
It will be read by a spanish person so it must be accurate for reading and understanding.
It is vital that they are able to understand the context of the message.
We will also expect a reply in spanish too which will need translating too but we can treat this as a second job.
Please get in touch asap
Thanks