發送短信 : Conversational Opening Structure in English and Vietnamese

  _  _     ______  __    __    _____     ______  
 | \| ||  /_   _// \ \\ / //  |  ___||  /_____// 
 |  ' ||   -| ||-   \ \/ //   | ||__    `____ `  
 | .  ||   _| ||_    \  //    | ||__    /___//   
 |_|\_||  /_____//    \//     |_____||  `__ `    
 `-` -`   `-----`      `      `-----`   /_//     
                                        `-`