Please choose the correct ending to complete the given sentence: Relationships: [header] How to behave when flying first class [title] Mingle with people. [step] The first class lounge is your first destination after the security check-point. It is a place where you can socialize with other people and share the destination you are going, and listen to others.

Ending1: Talk to people you don't know and plan to spend more time with some of your newfound friends. [substeps] If you have guests, talk to them during your first class trip. Ending2: [substeps] Even with fairly relaxed social network, the caterpillar that is just as shy as the caterpillar are those who offer high standards and visas to new people. Thus, when you are traveling together, you should always feel comfortable in your rooms early in the trip. Ending3: Really you want these people to think about how far you travel at all times. If they offer tickets or physical parking, you'll generally get a rush for a seat. Ending4: You may be in the presence of high powered executives or even various celebrities. [substeps] There have been many stories where people have flown first class and have been befriended by a celebrity and invited to an upcoming party or vip event.

Answer format: ending1/ending2/ending3/ending4