customer: Hello. 
 agent: Hello. How may I assist you today? 
 customer: I have booked a ticket last week with your service but now my cousin's wedding have postponed. Can you please change my existing reservation? 
 agent: Sure, I will help you on that. Could you please provide your name to check your previous reservation status? 
 customer: Sure, I am Susan Miller. 
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 customer: Ok, no problem. Thank you for your information. 
 agent: Thank you for approaching us, have a great day.
agent: Ok Susan, please hold on to check. We regret that, there is no reservation found with your name in our records.