What ticket reservation/hotel booking portals you have experience with? Which one do you consider the best one, and why?
If you are applying for a big company that has a reservation portal already, give their name. Make sure to check it out in advance and make points of the merits and demerits of the online portal. If they ask you about the thing you don't like in their portal, tell them from the customer's point of view. Otherwise provide any name and tell the reason why you picked them.