customer: Hello. 
 agent: Hello, how may I guide you? 
 customer: Can you please help me in booking my ticket from DFW to LAX? 
 agent: Sure, may I know your trip dates? 
 customer: My trip dates are from 07/11 to 07/13. 
 agent: Do you have any other requirements? 
 customer: Yes, I would like to prefer business class and I also need a single connecting flight. 
 agent: Ok, may I know your name please? 
 customer: Myself George Gonzalez. 
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 customer: It's ok, thank you. 
 agent: Most welcome.
agent: Sorry, we regret to inform you that there is no flight available as per your request.