French Phrase
C'est quoi ton numéro de réservation ?
Meaning
You are asking someone to tell you the reference number that was assigned to their reservation, whether for a hotel, restaurant, flight, or any booking service.
When to use
Use this question at the reception desk of a hotel, when confirming a restaurant booking, or when a travel agent needs to locate a client's reservation in the system. It is casual, so reserve it for friends, family, or informal business settings.
✦Grammar Breakdown
C'estquoitonnuméroderéservation?
C'est quoi
Informal way to ask "what is it?"; literally "it is what". Used in spoken French instead of "Qu'est-ce que c'est?".
ton (possessive adjective)
Indicates ownership and is informal; use "votre" in formal contexts.
de (preposition)
Links two nouns, here showing that the number belongs to a reservation.
numéro de réservation
A compound noun meaning "reservation number"; "numéro" is masculine, "réservation" is feminine.
🗨In Conversation
C'est quoi ton numéro de réservation ?
What's your reservation number?
C'est le 84219.
It's 84219.
✕Common Mistakes
C'est quel ton numéro de réservation ?
The order is incorrect; "C'est quoi" is the idiomatic informal form, while "quel" must precede the noun, not follow "C'est".
C'est quoi ton numéro de réservationes ?
Adding an "es" makes the noun plural and ungrammatical; "numéro" stays singular.
Quel est votre numéro de réservationes ?
Mixing formal "votre" with a plural ending is wrong; keep the noun singular.
↔Alternatives
Quel est ton numéro de réservation ?
What is your reservation number?
Peux‑tu me donner ton numéro de réservation ?
Can you give me your reservation number?
Quel numéro de réservation as‑tu ?
Which reservation number do you have?
Cultural Tip
In French, "C'est quoi..." is perfectly natural in everyday conversation, but it can sound too familiar in a professional setting. When speaking with hotel staff, a travel agent, or anyone you don't know well, switch to the more formal "Quel est votre numéro de réservation ?". Also, French speakers often repeat the number slowly to avoid misunderstandings, especially over the phone.