Verb conjugation of "zischen" in German

I bought the ticket very quickly and ran to the gate. A stewardess was waiting for me and waved. She shouted that I should hurry up. I ran as fast as I could and entered the gate leading to the plane.
I am sending you my e-mail address. Then I can write in German and send it to you faster. Please send me pictures of your children. I love little kids, they are always so sweet and innocent.
Many thanks for your suggestions. They are very useful. I can't answer your mail now, but I will come back to you later when I'll have more time. I hope that you and your family are well!