customer: Hi. 
 agent: Hello, may I know how best I can help you today? 
 customer: Can you please book a flight ticket from BOS to DCA? 
 agent: Sure, can you please share your journey dates that you prefer to travel? 
 customer: Yes, my travelling dates are Aug 23 and Aug 25. 
 agent: Do you require any stopovers in your journey? 
 customer: I need a connecting flight. 
 agent: Would you let us know if you have any other preferences? 
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 agent: Please share your name. 
 customer: My name is Alexander Williams. 
 agent: Ok, please wait a minute I will get back to you with the flight details. 
 customer: Ok. 
 agent: Sorry to say, no flights found with your requirement. 
 customer: That's ok, thank you for the response. 
 agent: Thanks for reaching us.
customer: I need a ticket in business class.