customer: Hello, Ronald Johnson here. 
 agent: Hello, how may I help you? 
 customer: I would like to spend my weekend with my friends at Washington. Can you help me in booking a ticket? 
 agent: Sure, please help me with your airport codes. 
 customer: I am planning to travel from LAS to DCA. 
 agent: Could you mention your trip dates please? 
 customer: I would like to plan my trip on 12/01 and 12/03. 
 agent: There is a flight for you with 1002 in Delta airline. 
 customer: Please book the ticket if the connections is 0. 
 agent: Sorry Johnson, there is no direct flight. 
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 agent: Thank you for choosing us. 
 customer: You are welcome.
customer: That's fine. Thank you for your information.