customer: Hi, myself Larry Robinson. 
 agent: Hello, how can I provide assistance to you? 
 customer: Can you please book me a ticket for direct flight to reach BOS from DCA? 
 agent: May I know on which dates you are planning to start and return? 
 customer: I am planning to start my journey on Aug 25th and return on Aug 27th. 
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 customer: I am comfortable with any class. 
 agent: Ok, please wait for a while. 
 customer: Sure, I'll wait. 
 agent: We are sorry to say that, there is no direct flight found on your requested dates. 
 customer: Ok, no problem. Thank you. 
 agent: Thanks for choosing us.
agent: Ok, which type of class do you prefer for your journey?