customer: Hello. 
 agent: Hello. 
 customer: Donna Walker here. 
 agent: What type of service you are excepting from us? 
 customer: Due to sudden health issue, I am not able to travel in a flight on those date that I want to travel. Can you please help me out with changing of my planned reservation with a new date? 
 agent: Sure, I am glad to help you with that. 
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 agent: Please wait for a while. 
 customer: Ok, take your time. 
 agent: Sorry for the inconvenience, there is no reservation found on your name in your database. 
 customer: Oh! I think the ticket was not booked due to server issue. Anyway, thank you for the information. 
 agent: Thank you for choosing us. 
 customer: Welcome.
customer: Thank you.