customer: Hi. 
 agent: Hello, how may I aid you today? 
 customer: I need to cancel my ticket, can you help me? 
 agent: Sure, may I know your name? 
 customer: I am David Parker. 
 agent: Please wait for couple of minutes. 
 __ 
 agent: We found a reservation on your name, shall I proceed to cancel? 
 customer: Yes, cancel it. 
 agent: Your reservation has been cancelled. 
 customer: Thank you for your help. 
 agent: Thank you for reaching us.
customer: Sure.