customer: Hi. 
 agent: Hello, how can I help you? 
 customer: My name is Donald Moore. Owing to emergency, I need to change my recent reservation. Please help me in that. 
 agent: Ok, I will help you with that. 
 customer: Thank you. 
 agent: Ok, please allow me a moment. 
 __ 
 agent: Sorry, there is no reservation with your name in our portal to make changes. 
 customer: No problem, thanks for your information. 
 agent: You are welcome, have a great day.
customer: Sure.