just (do something)

You use this phrase when the action you're describing seems easy, simple, fast, unimportant, or unexciting:

I just googled "new york florist" and that was the first shop that came up, so I called them.

A: What did you do this weekend?

B: I just sat at home and watched T.V.

No thanks.

This is an expression to use when someone offers you something, but you don't want it. Depending on how you say it, "No thanks" can sound angry, cheerful, or anything in between.

If you'd like to be more formal, you can say "No thank you."

try (someone)

You can talk about calling someone on the telephone with the phrase "try ___". Here are some examples:

I tried her three or four times, but there was no answer.

I'll try him again tomorrow.

This is a casual expression. When you're writing or speaking formally about calling a person, use the phrase "try calling" instead:

I tried calling her three or four times, but there was no answer.