customer: Hello. 
 agent: Hello, how may I help you? 
 customer: I would like to change my reservation due to some health issues, can you please help me out with that? 
 agent: Sure, I am here to help you. May I know your name? 
 customer: Myself Lisa Nelson. 
 agent: Thank you. Please wait for a while, let me check your reservation status. 
 __ 
 agent: Sorry, I have not found any reservation under your name in our database. 
 customer: Ok, no problem. Thank you for checking out. 
 agent: You are most welcome.
customer: Sure.