customer: Hello, I am Joseph Green. 
 agent: Hello,. How can I help you? 
 customer: Can you please assist me in booking a flight ticket from WA-SEA to DTW? 
 agent: Sure. Let me know your travelling dates? 
 customer: My travelling dates are from Dec 6 to Dec 8. 
 agent: Sorry, no flights found for your travelling dates. 
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 agent: Thanks.
customer: That's not a problem,. Thank you.