customer: Hello, I am Mary Martin. 
 agent: Hello, how may I serve you today? 
 customer: Owing to emergency I need to cancel my reservation, can you please help me in cancelling? 
 agent: Sure, I am here to help you. Please wait for a while. 
 __ 
 agent: Sorry, there is no reservation found on your name. 
 customer: Ok, thank you. 
 agent: Thank you for reaching us.
customer: Ok.