<?php
use Microsoft\Graph\GraphServiceClient;
use Microsoft\Graph\Generated\Chats\Item\Messages\ReplyWithQuote\ReplyWithQuotePostRequestBody;
use Microsoft\Graph\Generated\Models\ChatMessage;
use Microsoft\Graph\Generated\Models\ItemBody;
$graphServiceClient = new GraphServiceClient($tokenRequestContext, $scopes);
$requestBody = new ReplyWithQuotePostRequestBody();
$requestBody->setMessageIds(['1728088338580', ]);
$replyMessage = new ChatMessage();
$replyMessageBody = new ItemBody();
$replyMessageBody->setContent('Hello World');
$replyMessage->setBody($replyMessageBody);
$requestBody->setReplyMessage($replyMessage);
$result = $graphServiceClient->chats()->byChatId('chat-id')->messages()->replyWithQuote()->post($requestBody)->wait();