Are these sentences natural? Jan 16

[Musicgold]

Hi,

Are the following sentences natural to a native ear?

1. If you could give me a call back when you have a chance, my line here is 123-456. ( when should I say ‘it would be great’ ?)

2. I had a quick question like when you will be releasing your next quarterly newsletter?

3. I was hoping to leave here at 5 pm.

Thanks,
MG.

[Dozy]

1. OK, though "number" seems more likely than "line". To incorporate your suggested phrase you could also say:

"It would be great if you could give me a call back when you have a chance. My number here is 123-456."
"If you could give me a call back when you have a chance, that would be great. My number here is 123-456."

2. It should be "when will you...." with a question mark or "when you will..." without one, but I am unsure of the purpose of "like" since you seem to be stating the actual question you want to ask.

3. OK.

[Musicgold]

Thanks Dozy.

I am still not clear on #2. If I were to remove 'like', it sounds like two different sentences without any transition phrase between them. Also those sentences sound choppy when you say them. Usually native speaker combine two such sentences. How should I say it?

2b. I had a quick question. When will will be releasing your next quarterly newsletter?

[Beeesneees]

It should be said:
I have a quick question. When will you be releasing your next quarterly newsletter?

As you can see, native speakers don't always combine the two sentences. It is natural to separate the statement from the question.
If you wish to combine them, then you would need appropriate punctuation. In writing, the example below is acceptable.

I have a quick question: when will you be releasing your next quarterly newsletter?
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Cheers m' dears!