customer: Hello. 
 agent: Hello. How can I assist you today? 
 customer: I'm Nancy Green here. I want to travel for a city roundup trip at Washington, can you please book a ticket from DC-IAD to DC-DCA? 
 agent: Sure, can you share your probable travelling dates? 
 customer: Sure, my preferable dates of journey are from 10/05 to 10/07. 
 agent: Please allow me a moment to check for the availability of flight. 
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 agent: Sure. Nancy, I am sorry to inform you that there is no flight available at your requested dates. 
 customer: Ok, fine. Thank you for your service. 
 agent: You are welcome. Thank you for contacting us.
customer: Sure, please make sure that price is 200.