Answer:
Dear Diary,
Today has been a most peculiar day. My dear friend Hamlet, whom I've known since we were young, was summoned by King Claudius to discuss his behavior in the court of Elsinore. We were told that Hamlet had been acting mad, which we understood little of. He didn't seem any different to us, and he even seemed pleased to see us. To my surprise, however, King Claudius informed us of a plan to send Hamlet to England. We were appalled and couldn’t understand why such action was necessary.
Hamlet seemed surprised and displeased with the decision. When questioned by Claudius as to why this course of action should be taken, Hamlet responded "I do not know why yet I live to say 'This thing's to do,' Sith I have cause and will and strength and means To do't." This quotation from the play seemed to indicate that there was something more to this decision than any of us were aware of.
When Hamlet asked me and Guildenstern about the reasoning behind this action, we could only provide him with limited knowledge on the matter. Before long, it was decided that we would accompany Hamlet to England and bring along a sealed letter from Claudius to the King of England himself. We agreed to this task and were soon preparing for our departure.
Though I do not understand the reasons for our mission, I trust that things will be better once we complete it.
Yours truly,
Rosencrantz