customer: Hi. 
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 customer: I want to book a ticket from DCA to ATL, can you help me? 
 agent: Sure, I am here to assist you. Can you please tell us your name? 
 customer: I am David Thompson. 
 agent: Thank you. May I know your travel dates? 
 customer: My travel dates are 10/27 and 10/29. 
 agent: Ok, please let me know your preferences. 
 customer: I want to travel in normal cost airline. 
 agent: Ok, please wait for sometime. 
 customer: I prefer a connecting flight. 
 agent: Sorry, there is no flight available on your given travel dates. 
 customer: No problem, thanks for checking. 
 agent: You are welcome and thank you for choosing us.
agent: Hello, how may I help you?