Expression: "You can do the booking on telephone."

[Tom]

Hi

Could you please tell me which ones of the following are correct and natural?

[Alan]

Hi Tom,

Of the lot I'd choose number 4. But even simpler is to say: You can book by phone.

Alan
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English as a Second Language
You can read my ESL story Present Simple

[Tom]

Many thanks, Alan

So you find this one the best?