Let's go smeet in the evening at 7 p.m. Let's meet in the evening at 7 p.m.

Hi Sam., Hi Sam,

It's not a sentence so you can't use a full stop.

I hope that youyou still remember about our meeting tomorrow in the afternoon. I hope you still remember about our meeting tomorrow afternoon.

"that" and "in the" are unnecessary.

Unfortunately we can't meeting on that time because my friend called and asked me for help to solve a problem. Unfortunately we can't meet on that time because my friend called and asked me for help to solve a problem.

I will buy cheeips and Pepsi and I am sure we wouldill have a good time. I will buy chips and Pepsi and I am sure we will have a good time.

If you have forgotten the way to my house I will remind you. If you have forgotten the way to my house I will remind you.

Or "In case you have forgotten..."

You need to get on a bus number 5 thaen you drive 4 stop buses and get off at the fivethfth stop. You need to get on bus number 5 then you get off at the fifth stop.

You canwill see a yellow house, I in front of the stop bustat bus stop. You will see a yellow house in front of that bus stop.

Call me and I gowill come out to meet you. Call me and I will come out to meet you.

Bye.

It's repetitive if you are already saying "See you". It means the same thing as "bye".