customer: Hi,. 
 agent: Hello, how may I serve you? 
 customer: Please change my existing reservation owing to an emergency. 
 agent: Sure, let me know your name to check the list and revert you. 
 customer: I am Ruth Edwards. 
 __ 
 customer: Sure. 
 agent: We could not find any reservation by the name you gave. 
 customer: Thank you. 
 agent: Thank you for approaching us.
agent: Ok, please wait.