customer: Hello. 
 agent: Hello. How could I serve you today? 
 customer: Can you aid me to book my ticket from DEN to DTW? 
 agent: Sure, may I know your planned travel dates? 
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 agent: Is there any other requirements, please let me know? 
 customer: I prefer for single connection and I looking for business class to travel. 
 agent: Please provide your name. 
 customer: Brandon Taylor here. 
 agent: Unfortunately there is no flight found with your given information. 
 customer: Thank you for the help. 
 agent: Thank you.
customer: My trip dates are 8 may and 10 may respectively.