customer: Hi. 
 agent: Hello, how may I assist you? 
 customer: I am Betty Lewis, I need a connecting flight from Las Vegas. I have a meeting with Board of Directors, in DCA. Can you help me in booking a ticket with a price of 200? 
 agent: Sure, may I know your travelling dates? 
 customer: I have to stay there for couple of days, that is from 04/03 to 04/05. 
 agent: Kindly mention your origin airport code? 
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 agent: Sorry to inform that, we have no flights available with your request. 
 customer: Ok. Thanks for providing some information. I am glad at your service. 
 agent: Thank you for approaching us, have a nice day.
customer: I am from Las Vegas, LAS.