customer: Hi. 
 agent: Hello, how can I assist you? 
 customer: Can you please book me a flight ticket from AUS to MSP? 
 agent: Sure, let me know your travelling dates. 
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 agent: Please share your class preference. 
 customer: I would like to travel in an economy class. 
 agent: May I know your name? 
 customer: Myself Ronald Baker. 
 agent: Sorry, there are no flights found based on your details. 
 customer: That's ok, not a problem. Thanks for your help. 
 agent: Thank you for choosing us.
customer: My travel dates are from Dec 20 to Dec 22.