Dear Jim,
I hope you are doing well; I am writing this letter to thank you for agreeing to look after my house and pet while I'm gone for a holiday, i also want to tell you about some details, instructions and duties that you have to look after while I am away.
Firstly, I would not be there to greet you at home because by the time you arrive, i will already be at airport so if you have any difficulty you can contact me on my cell number, however i will on roaming so i won't be able to respond at the moment.
Secondly, give food to the dog two times a day; he goes on evening walk every day and keep the dog inside the house all day because he gets scared, if locked outside and might run away.
Lastly, you just have to keep the house mess free, switch off all the lights of the house when you go to sleep and the plants in backyard needs water every once a week.
I hope your stay at my house goes well, if you still have any confusion or you get in an emergency, you can call me anytime.
Yours truly,
Sarah
Dear Jim,
I hope you are doing well; I am writing this letter to thank you for agreeing to look after my  
house
 and pet while I'm gone for a holiday,  
i
  also
 want to  
tell
 you about  
some
  details
, instructions and duties that you  
have to
 look after while I am away. 
Firstly
, I would not be there to greet you at home  
because
 by the time you arrive,  
i
 will already be at airport  
so
 if you have any difficulty you can contact me on my cell number,  
however
  i
 will on roaming  
so
  i
 won't be able to respond at the moment. 
Secondly
, give food to the dog two times a day; he goes on evening walk every day and  
keep
 the dog inside the  
house
 all day  
because
 he  
gets
 scared, if locked outside and might run away. 
Lastly
, you  
just
  have to
  keep
 the  
house
 mess free, switch off all the lights of the  
house
 when you go to sleep and the plants in backyard needs water every once a week.
I hope your stay at my  
house
 goes well, if you  
still
 have any confusion or you  
get
 in an emergency, you can call me anytime.
Yours  
truly
,
Sarah