customer: Hello. 
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 customer: I would like to travel from DFW to BOS. Can you please help me? 
 agent: Sure, may I know your trip dates please? 
 customer: My trip dates are from 02/08 to 02/10. 
 agent: Do you have any other requirements? 
 customer: My class preference is business class with 1 connection. 
 agent: Can I know your name please? 
 customer: Myself Anna Martinez. 
 agent: Sorry, we regret to inform you that there is no flight available as per your request. 
 customer: It's ok, thank you.
agent: Hello, how may I help you?