Réponse : hello, it’s (name). Thank you for your phone call, sorry I couldn’t answer because I’m on a business trip in Spain. I will be back on Wednesday 29 of juin. Please leave me a message with your name and phone number, I will then call you back as soon as I get back. Thank you for your understandment, kind regards.
Explications : au lieu de « kind regards » tu peux aussi mettre « speak soon » mais ça se dit un peu moins
