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I am not convinced that reason exists. Reasonableness is an emotional state. If you tell people they are being emotional when they use reason they would heartily argue against you, but there it is: an emotionless reason would have no issue with being called emotional. Logic is just a tool and has nothing to do with the emotion of reasonableness.

In ordinary conversation, the words "reason" and "reasonable" often have a different connation than their meanings in a strict philosophical sense. Being "reasonable" in an every day sense usually implies being agreeable, practical, negotiable or compliant, but not necessary logical. As Hiram pointed out, being "reasonable" appeals to emotion. Likewise, "reason" often implies having an acceptable explanation for one's actions, whether or not it is a logical one. In philosophy, which is quite strict about word meanings and usage, reason and being reasonable are inextricably tied to logic. In that sense, "reason" is ones capacity for being logical, and being "reasonable" implies being in accordance with the rules of formal logic.

A logical man knows it is wrong to cheat on his wife. Whereas, a reasonable man actually won't do it.

Logic takes us to the truth...... it is merely the tool

Reason takes us to meaningful truth.... it uses logic as well as purpose to get meaningful truth.