I will try my best for a nice trip abroad

Let me write for the second time in my notebook.

Despite I started italki two days ago, I have already contacted some foreign friends on here. I had a good time and am so happy because everyone is kind to me and even taught me English. I don't want to waste their helpfulness towards me, so I decided to write their advice on the notebook that I bought today (not in italki).

By the way, I paid about one hundred thousand yen (¥100,000) to the airline company as travel expenses. I must appreciate my parents because I'm still a student in university (i.e., I don't work yet).

In order not to waste both the advice in English of foreign friends on italki, and the support of my parents, I will try my best!

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New expressions in English for me (e.g., word, phrase, grammar...etc);
(I'm going to write it after the above sentences is corrected)