Keshia alisema hakuna chenji ya kutosha leo, lakini ofa ya mkate bado inaendelea.

Because it is the first word in the sentence, the capital K does not prove it is a name. In Swahili, keshia is a common borrowed word meaning cashier.

So in many contexts, Keshia alisema... would naturally mean The cashier said...
If the wider context is about a person named Keshia, then it could also mean Keshia said... Context decides.

Alisema comes from the verb kusema = to say.

It breaks down like this:

• a- = he/she
• -li- = past tense marker
• -sema = say

So alisema means he said or she said.

A useful thing to remember: Swahili verbs usually do not show gender, so the same form can mean he said or she said.

Hakuna is the standard way to say there is no or there are no.

So:

• hakuna chenji = there is no change
• hakuna maji = there is no water
• hakuna watu = there are no people

In this sentence, hakuna chenji ya kutosha means there isn’t enough change.

It is a very common and natural structure in Swahili.

Chenji is a loanword from English change, and it usually means cash change in everyday shop or market situations.

Here it means the small money needed to give the correct amount back to a customer.

So hakuna chenji ya kutosha means there is not enough cash change available.

Kutosha means to be enough or to be sufficient.

When you say ya kutosha after a noun, it means enough or sufficient for that noun.

So:

• chenji ya kutosha = enough change
• maji ya kutosha = enough water

The ya is a linking word that agrees with the noun class of chenji.
Literally, the phrase is something like change of being enough, but in natural English it is just enough change.

Yes, leo = today can often move around in the sentence.

The given sentence says:

• Hakuna chenji ya kutosha leo = There isn’t enough change today

You could also say:

• Leo hakuna chenji ya kutosha

Both are natural. The difference is mostly about emphasis and flow, not basic meaning.

Ofa is a loanword meaning offer, often in the sense of a special deal or promotion.
Mkate means bread.

So ofa ya mkate means:

• the bread offer
• the offer on bread
• the bread promotion

The ya links the two nouns, like of or for in English.

This is a very common expression.

• bado = still
• inaendelea = it is continuing / it is ongoing

So bado inaendelea means:

• is still going on
• is still continuing
• is still available (depending on context)

In this sentence, it means the bread promotion has not ended yet.

This is because of noun class agreement.

The subject here is ofa, and ofa takes the class agreement used with many class 9 nouns in the singular. That gives the subject marker i-:

• ofa inaendelea = the offer is continuing

If it were plural, you would normally get zi-:

• ofa zinaendelea = the offers are continuing

So the i- in inaendelea agrees with ofa.

Yes, it is natural and understandable Swahili.

A speaker might also say similar things such as:

• Chenji haitoshi leo = There isn’t enough change today
• Hakuna chenji ya kutosha kwa sasa = There isn’t enough change for now / at the moment
• Hamna chenji ya kutosha leo = a more colloquial version in some places

But the original sentence is perfectly good, especially in neutral or written Swahili.