At the time of booking a domestic flight, can I apply for the bundle service ? February 21, 2022 06:57 Updated Domestic flights have no bundle service. Related articles I bought it as a non-members, but I forgot my reservation number. How can I find it? It is very hard to reach the customer center(agent) Is there a service fee for cancelling an additional service? When can I make a reservation for the bundle service? I have reserved a basic/Smart service from bundle services, can I purchase one more service?