Replying to a friend's message

Awesome job! All very minor mistakes. I was really impressed! It has good flow. The changes I made were to help it sound more natural and fix the tiny grammatical errors you made. I did want to note, 'to book' is used more for tickets or flights and 'to schedule' is used more for appointments and exams. I hope this helps! Again, great work!

Replying to a friend's message

Dear Caroline,

It's good to hear from you again. I'm really sorry for the delay in writing you back, but I've been very busy the last couple of weeks. As you know, I’m working and studying English at the same time, and I haven’t got had a proper break until now. My boss asked me to do a project and I’ve been working on it since then. I usually work better under pressure, so I finished it the same day which as the deadline was (or finished it on the day of the deadline). To be quite honest, I read your message a few days ago, but I’ve been doing such a lot of things that I completely forgot to reply you before. I hope you could forgive me for that.

I’ve been thinking about doing the CAE exam and finally I decided to book sign up for it. Now that I've finished the project I can focus on improving my English. The exam is a bit difficult but I hope I can pass it.

What about you? Do you have any plans after you finish your training at the hotel? Do you like working at the reception desk or would you like to work somewhere else? I know you well and I think you must enjoy being at the reception desk, talking and meeting new people everyday.

Have you got any plans for this holidays? I’ve been thinking of visiting Maria this summer and it would be nice if you could come (or if you came) with us and be all gathered together again. Let me know what do you think about it.

Kind regards

Veronica

Nicely done Veronica! My corrections are in red and my suggestions to sound more natural are in blue/grey.

"delay in writing you back" - This is common in American English. In British English it would be more common to say "delay in writing back to you".

A more colloquial way to say it would be "delay in getting back to you" (you can use this to refer to any form of communication such as a letter, email, phone call, whatsapp, etc.)