customer: Hello, I am Thomas Clark. 
 agent: Hello. How can I help you for today? 
 customer: I need to book a flight ticket from DEN to AUS, Can you please help me for booking? 
 agent: Yes, can you share me your dates of travel? 
 customer: I would like to travel on 05/27 to 05/29. 
 agent: Give me a moment. 
 customer: Sure. 
 agent: Sorry to inform you that there are no flights found on your requested dates. 
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 agent: Thank you for contacting us. 
 customer: Thanks for your information.
customer: Ok, no problem./.