customer: Hello. 
 agent: Hello. How may I aid you? 
 __ 
 agent: Sure, I am here to help you. 
 customer: Thank you. 
 agent: May I know your name please? 
 customer: Amanda Phillips. 
 agent: Sorry to inform you that there is no active reservation on your given name. 
 customer: Ok, no problem. Thank you for checking. 
 agent: Thanks for contacting us.
customer: Can you please help me to change my existing reservation?