Set phrases for opening paragraph
I am writing to you in connection with….
I am writing with regard to / in regard to / with reference to…
I am writing to ask if you could informal me about….
I was interested in your advertisement in….
I would appreciate some further information about….
Referring to your advertisement published in…
I am writing to give you some information about…
I am writing in reply to your letter…
In reply to your letter concerning….
With reference to your letter of…
Set phrases for closing paragraph
I would be very grateful if you would / could reply as soon as possible.
Thanking you for your time assistance.
I would like to thank you in advance.
I look forward to your reply at your earliest convenience.
I look forward to hearing from you.
I hope this information will be of some help to you…
I would be happy to supply you with any further information….
If you need further information, do not hesitate to contact me.