At the airport , Rachel was feeling nervous . It was her first time flying on an airplane . She approached the check-in counter and handed over her passport and ticket to the attendant . “ Here you go ,” Rachel said , her voice shaking a little . The attendant smiled kindly . “ Don't worry , everything will be fine . Your flight is on time , and your gate is B14 . Have a safe trip !” Rachel felt a bit more relaxed and made her way through security . She took off her shoes , put her carry...