Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
reservation unavailable
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "reservation unavailable" is correct and usable in written English. You can use it when informing someone that a reservation cannot be made or is not currently possible. Example: "I'm sorry, but your requested date for the event has a reservation unavailable." Alternative expressions include "no reservation available" and "reservation not possible."
✓ Grammatically correct
News & Media
Academia
Science
Wiki
Alternative expressions(20)
fully booked
at capacity
sold out
Fully booked
completely reserved
booked solid
unavailable
fully scheduled
committed
tied up
fully committed
there is no availability
supply is exhausted
fully recognized
there is no remedy
there is no available
there is no rush
there is no competition
not accessible
there is no interference
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified similar examples from authoritative sources
Similar Expressions
60 human-written examples
Susan Combs, the Texas comptroller of public accounts, complained: "It is not acceptable that thousands of Texans spent hours trying to reserve appliance rebates on Wednesday, April 7, only to be met with dropped calls and an unavailable online reservation system".
News & Media
You will also impress clients if you (or your concierge) can swing reservations at the perennially unavailable Dinner by Heston Blumenthal (at the Mandarin Oriental hotel) or Pollen Street Social (near Oxford Circus).
News & Media
Reservations begin at 8 AM each day, and Apple advises buyers that their selection might become unavailable before they complete the reservation process due to high demand.
News & Media
The biggest fault we found is a common one in new hotels: Despite my repeated questions, the reservations clerk understated the amount of unfinished work and unavailable services at the site.
News & Media
* odds unavailable.
News & Media
Breakfast unavailable.
News & Media
Without reservation.
News & Media
Reservation required.
News & Media
Reservation only.
News & Media
Many CALS applications will be unavailable due to maintenance Tuesday evening: Commitment Tracking System; Endowment Tracking System; Geneva Pesticide Application System; Pesticide Application Database; Plant Growth Facilities System; Term Appointment System; Reservations and Billing (RNB) System; Commodity and Endowment Grant Proposals OEH Training Registrationn; and the CALS OFA website.
Academia
Jürgen Klopp remains unavailable.
News & Media
Expert writing Tips
Best practice
In formal writing, ensure the phrase is preceded by a subject and a verb, such as "The requested reservation is unavailable", for better clarity.
Common error
When a system is broken, "reservation unavailable" is appropriate. However, if the system works but the venue is full, using "fully booked" or "at capacity" provides more precise information to the reader.
Source & Trust
92%
Authority and reliability
4.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "reservation unavailable" serves as a noun phrase often acting as a subject or a predicate adjective complement. In many instances found in Ludwig, it appears within reported speech or system error messages to indicate a binary state of non-access. It consists of the noun 'reservation' modified by the post-positive adjective 'unavailable'.
Frequent in
News & Media
55%
Academia
20%
Science
15%
Less common in
Wiki
5%
Encyclopedias
3%
Social Media
2%
Ludwig's WRAP-UP
In conclusion, "reservation unavailable" is a correct and highly versatile phrase used predominantly in professional and news contexts. Ludwig analysis shows that it is particularly common when discussing system failures or capacity limits in digital platforms. While it is grammatically sound, writers should be mindful of whether they are referring to the functionality of a system or the lack of available slots. For maximum clarity in customer-facing communication, consider using alternatives like "fully booked" when referring to capacity. Overall, Ludwig AI classifies this phrase as a standard component of professional English vocabulary.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
no reservation available
More explicit use of the indefinite article to indicate a specific missing slot.
booking unavailable
Swaps the noun for a gerund, focusing on the process.
unavailable for booking
Uses a prepositional phrase to clarify that the action of reserving is blocked.
reservation not possible
Changes the adjective to describe the feasibility rather than availability.
fully booked
Idiomatic expression indicating that all capacity has been reached.
cannot be reserved
Passive verbal structure that emphasizes the inability to complete the action.
bookings closed
Indicates that the period for making reservations has ended.
unavailable reservation system
Attributive use describing the system itself as non-functional.
no vacancies
Specific to hotels and housing contexts.
sold out
Typically used for events or commercial products where reservations involve a purchase.
FAQs
How to use "reservation unavailable" in a sentence?
You can use it to describe a status, for example: "Due to the holiday rush, the online "reservation unavailable" notice appeared on the website."
What can I say instead of "reservation unavailable"?
Depending on the context, you could use "no reservation available", "fully booked", or "unavailable for booking".
Is "reservation unavailable" correct to use in business emails?
Yes, it is a professional way to state that a booking cannot be made. For better flow, you might say "We apologize, but your requested "reservation unavailable" status is due to high demand."
What's the difference between "reservation unavailable" and "fully booked"?
The phrase "reservation unavailable" often refers to the system or service being down or restricted, whereas "fully booked" specifically means all slots have been taken by other people.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
92%
Authority and reliability
4.8/5
Expert rating
Real-world application tested