Kalau reservasi saya belum ditemukan, saya bisa menunjukkan email konfirmasi.

Kalau means if. It introduces the condition for the main part of the sentence.

So:

• Kalau reservasi saya belum ditemukan = If my reservation hasn’t been found yet
• saya bisa menunjukkan email konfirmasi = I can show the confirmation email

In everyday Indonesian, kalau is very common in speech and writing. A more formal alternative is jika.

Reservasi saya literally means my reservation.

In Indonesian, possession is often shown by putting the possessor after the noun:

• reservasi saya = my reservation
• nama saya = my name
• hotel saya = my hotel

So the word order is different from English. Indonesian does not use a separate word like of here.

Belum means not yet, while tidak usually means a general not.

So:

• belum ditemukan = has not been found yet
• tidak ditemukan = was not found or is not found, without the idea of yet

In this sentence, belum is used because it suggests the reservation may still be found later. That fits the situation naturally.

Ditemukan is the passive form of menemukan, which means to find.

• menemukan = to find
• ditemukan = to be found / found

The prefix di- often marks the passive voice in Indonesian.

So:

• reservasi saya belum ditemukan literally means my reservation has not yet been found

This is similar to English passive structure: has not been found.

The passive is very natural here because the focus is on the reservation, not on who is looking for it.

• Reservasi saya belum ditemukan focuses on the status of the reservation.
• An active version would need an agent, such as Anda belum menemukan reservasi saya = You haven’t found my reservation yet.

In a hotel or travel context, the passive sounds more polite and less direct. It avoids sounding like you are blaming the staff.

Bisa means can or be able to.

Here, saya bisa menunjukkan email konfirmasi means I can show the confirmation email.

It expresses ability or possibility. In this context, it sounds like offering a helpful solution.

A similar word is dapat, which is often a bit more formal:

• saya bisa menunjukkan...
• saya dapat menunjukkan...

Both are correct here.

Yes. Menunjukkan means to show.

It comes from tunjuk, related to pointing or indicating, but menunjukkan commonly means show in normal usage.

So:

• menunjukkan email konfirmasi = show the confirmation email

A learner might also hear memperlihatkan, which can also mean show, but menunjukkan is very common and natural here.

Indonesian does not have articles like the or a/an.

So email konfirmasi can mean:

• a confirmation email
• the confirmation email

The exact meaning depends on context. In this sentence, English naturally uses the confirmation email, but Indonesian does not need a separate article.

Yes, it is very normal.

• email is a common loanword in Indonesian.
• konfirmasi is also a common loanword meaning confirmation.

So email konfirmasi means confirmation email.

You may also see similar phrases like:

• email pemesanan = booking email
• bukti reservasi = reservation proof
• surat konfirmasi = confirmation letter

But email konfirmasi is very natural in modern usage.

It has two main parts:

1. Kalau reservasi saya belum ditemukan
   = the if-clause / condition

2. saya bisa menunjukkan email konfirmasi
   = the main clause / result

So the pattern is:

• Kalau + condition, result

This is very common in Indonesian:

• Kalau saya lapar, saya makan. = If I’m hungry, I eat.
• Kalau ada masalah, saya bisa membantu. = If there’s a problem, I can help.

Yes. Jika also means if.

So this sentence is also correct:

• Jika reservasi saya belum ditemukan, saya bisa menunjukkan email konfirmasi.

The difference is mostly tone:

• kalau = more common and conversational
• jika = a bit more formal or written

Both are correct, but kalau sounds very natural in everyday speech.

Yes, it is polite and natural.

It works well because:

• it uses the passive belum ditemukan, which sounds less confrontational
• it offers a solution with saya bisa menunjukkan...
• it avoids directly blaming the listener

It sounds cooperative, like: If my reservation hasn’t been found yet, I can show the confirmation email.

That is exactly the kind of tone you usually want in this situation.

Yes. Depending on the context, you might also hear:

• pemesanan = booking / reservation
• booking = very common borrowed word in casual speech

Examples:

• Kalau pemesanan saya belum ditemukan...
• Kalau booking saya belum ditemukan...

All of these can work, but reservasi is clear, standard, and very natural in travel-related contexts.