For a dinner reservation at Hotel Nikko Fukuoka's Chinese restaurant 'Kohro' (鴻臚) for 15 people, identify which private rooms can accommodate this group size. Additionally, state the private room fee for dinner and the direct phone number for 'Kohro' reservations.
Navigate to 'hotelnikko-fukuoka.com'. Click on the 'レストラン' (Restaurant) link. Click on the '個室のご案内' (Private Room Information) link. Scroll down to the '中国料理 「鴻臚」' (Chinese Restaurant 'Kohro') section. Identify and list the private room combinations suitable for 15 guests. Extract the private room fee for dinner for '鴻臚'. Extract the direct phone number for reservations for '鴻臚'. Synthesize all extracted information into a concise answer.
State that '真珠＋琥珀' (Shinju + Kohaku) can accommodate up to 20 people. State that 'ホール席A' (Hall Seat A) can accommodate up to 16 people. State that 'ホール席B' (Hall Seat B) can accommodate up to 35 people. State the private room fee for dinner is 5,500 JPY (tax included). Provide the direct phone number for '鴻臚' as 092-482-1164.