Your friend has invited you to go to the zoo but

Hi, Sam

Thanks a lot for your invitation. But Id like to go to the science museum more. You see, I should write some article for my Biology lesson, and I need some information from the museum. I cant get it in the zoo. Thats why, I offer you to go to the science museum this weekend. And next Saturday we can certainly go to the zoo. I hope, you understand me well. Write me back about your decision.

With best wishes, Alex