Heya.
Zdania z kursywa są formalne.
Zdania z podkreśleniem są nieformalne.
1. I am asking this email to ask about — I am writing this with regard to your advertisement...
2. I want to get more information — I would appreciate if you could send us further information.
3. Can we come for these days? — Are there places available for these days?
4. Where can we stay? — We would also like to know what kind of accommodation you can provide.
5. How much money do we need to pay? — Lastly, how much exactly will the participation fees be?
6. Can't wait for your answer — We are looking forward to your reply.
7. Best regards — Yours faithfully.