这几个句子翻译下。谢谢哈。

愿意采纳正确的表述吗？看这里——
1、I will keep you in touch(contact you)/send short messages to you after I get on a train .
2、So much for today ,as my girlfriend is still waiting for me.Let's chant another day,and I will treat you to dinner.
3、What are the advantages to buy tickets from agent booking office than at the railway station?
4、What good /harm do I get if I do this?
or
What are the advantages/disadavantsges by doing this?
原创翻译，手工制作。希望有助于你！
祝你开心如意！

1. i will contact you/ or send text message to you after i take the train.
2. my girlfirend is waiting for me, so that is all today, will chat at the another day, i will treat you a dinner.
3. what is the advantage of buying ticket in ticket angency compared with buying thicket in railway station?
4. what is the advantage and disadvantage to me if i do like this?

1, I'll contact you after I take a train/send SMS to you
2 my girlfriend waiting for me, so today first here, another day chat again, I invite you to dinner in the agent
3 购票点 buy ticket, than at the train station to buy tickets, what benefits? I do this, to me what are the advantages/disadvantages?