You have received an email from an English friend inviting you to spend Christmas in England. Write an email of 50 -

Dear Susan,

Thank you for your e-mail and your invitation to come to London in December. It would be wonderful to spend Christmas in England! It has been my dream!

Unfortunately, I have to apologize for my refusal. I will have to be in Moscow on 27^th December. My sister is getting married, so I will have to participate in her wedding ceremony.

I hope you will be able to invite me again next Christmas!

Best regards,

Olga