customer: Hello, Michelle Walker here. 
 agent: Hello. How can I help you? 
 customer: I have some changes in my plan, due to change of the dates, can you make some changes in my existing reservation? 
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 customer: My new reservation details are from DTW to EWR. And my new dates are 08/07 to 08/09. 
 agent: Unfortunately there is no flights found under your requested details. 
 customer: No issues, thank you for your support. 
 agent: Welcome, have a great day.
agent: Ok, your reservation is found.Please provide your details.