customer: Hi. 
 agent: Hello, how can I assist you today? 
 customer: I wold like to make change my existing reservation, can you please help me? 
 agent: Sure, I will help you with that. 
 customer: Thank you. 
 agent: Let me know your name to check your reservation? 
 customer: Sure, my name is Alexander Wright here. 
 agent: Ok, please wait a moment. 
 customer: Sure, I will wait. 
 __ 
 customer: Ok, not an issue.Thank you for your information. 
 agent: Thank you for choosing us.
agent: Thank you for waiting. I have checked in reservation list to change your ticket, but could not find any reservation with your name.