I heard a phone conversation between a person wishing to buy theater tickets and a sales agent like the following:
“I want to buy two tickets for tonight’s show.”
“Certainly. I’ll need your credit card information.”
I believe just to say “I need your credit card information” makes perfect sense. What are the purposes/effects of using the modal verb “will” here?
Another scenario: let’s suppose the theatergoer asked the agent something for which the agent has no ready answer. In such a case, I know one would say something like:
“I’ll have to get back to you on that one.” Again, I believe the sentence is grammatically just fine without the “will." So, why do many people add the “will”?
I am interested in the nuances the use of “will” produces in the both cases.