1. I am writing to thank you so much for inviting me to my birthday.
2. In this situation I must ask you for another date like Saturday.
3. I would be grateful if we could meet late on Thursday.
A czy to zdanie jest dobrze?
Z przykrością informuję, że nie mogę być na spotkaniu w niedzielę.-I am sorry to inform you that I can not be at the meeting on Sunday.