Dear Ben,
Thank you for your last letter. I was glad to hear that you and your parents are well.
I'm so sorry for breaking your plans but unfortunately the schedule of our independent testing has been changed, so I can't come to London at the beginning of June.
I feel awful about postponing our meeting. As you know, I have been looking forward to this trip for a very long time. Do you think it may be possible for me to come later in the summer? If it is possible, when exactly would you prefer me to come?
Hope to hear from you soon.
Take care,
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