Dear Joan,
Hoping you are doing well. Last Sunday, I received your letter, I was ready surprised when I find an invitation to visit your country. Firstly I am thankful to you for such a lovely offer. I am very excited to meet you.
Moreover I want to intimate you that I would come for a week. Fortunately, there are summer vacations during this visit I would it would be great time to enjoy with you. I will come on 1st August to 2021 and leave for four my country on 8 August 2021. I also confirmed my return tickets.
During my stay at your home, I planned, we will go for four date tour in hill station many of my friends have shared their experiences of such a pleasant area as we are meeting after a long period time, it would be good opportunity to spend some time. On the top of it, please let me know. The visiting dates are preferable to you or not. Just informing on call. Looking forward to hearing from you soon. I am impatience to see you.
Yours faithfully, 
Dear Joan,
Hoping you are doing well. Last Sunday, I received your letter, I was ready surprised when I find an invitation to visit your country.  
Firstly
 I am thankful to you for such a lovely offer. I am  
very
 excited to  
meet
 you. 
Moreover
 I want to intimate you that I would  
come
 for a week.  
Fortunately
, there are summer vacations during this visit I would it would be great time to enjoy with you. I will  
come
 on 1st August to 2021 and  
leave
 for four my country on 8 August 2021. I  
also
 confirmed my return tickets.
During my stay at your home, I planned, we will go for four date  
tour
 in hill station  
many
 of my friends have shared their experiences of such a pleasant area as we are meeting after a long period time, it would be  
good
 opportunity to spend  
some
 time. On the top of it,  
please
  let
 me know. The visiting dates are preferable to you or not.  
Just
 informing on call. Looking forward to hearing from you  
soon
. I am impatience to  
see
 you.
Yours  
faithfully
,