how to refuse an invitation ???

[PolishEeyore]

Dear colleagues,

I have to reply for a formal invitation. I prepare three different refuse answer but I do not know which will be the best for the really important event.


first option

Dear Mrs Alison Hope,

Thank you very much for your invitation to your business dinner. I was very pleased to receive it. Unfortunately, I have already promised to attend to another meeting, so I will not be able to accept your invitation. Please accept my apologies.

Yours sincerely,

second option
Dear Mrs Alison Hope,

I am very sorry that because of a previous commitment I am unable to accept your kind invitation to your business dinner. Please accept my apologies.

Yours sincerely,


third option
Dear Mrs Alison Hope,

I am writing to acknowledge receipt of your invitation to your business dinner. I regret that my schedule for this day prevents me from accepting your invitation. I do hope that you may wish to keep me posted regarding future occurrence. Please accept my apologies.

Yours sincerely,


Please give me some advice,

[Anglika]

Dear Mrs Hope,

Thank you for your kind invitation to your business dinner. Unfortunately a previous engagement means that I am unable to accept. I do hope that I may be able to attend some other dinner.

Yours sincerely,

xxx

[PolishEeyore]

Dear Mrs Hope,

Thank you for your kind invitation to your business dinner. Unfortunately a previous engagement means that I am unable to accept. I do hope that I may be able to attend some other dinner.

Yours sincerely,

xxx

Anglika , thank you very much for your help.