Depends on the context --- If they just met by chance, dependant on the circumstances, perhaps the request was extended out of politeness and the receiver genuinely had to get home to rest. On the other hand, if they had emerged from a heated debate...the "requester" might be trying to smooth things over, being curteous and saving face and the other person may be hoping to make an escape. There are so many possibilities and more information is needed to draw a solid conclusion.

Source author: Marie Betts-Johnson mbj@ipicalifornia.com