customer: Hello. 
 agent: Hello, How can I serve you? 
 customer: Can you please help me in booking a flight ticket to IAD from CLT in April month? 
 agent: Sure, May I know the journey dates? 
 customer: Sure, my journey dates are Apr 10 and Apr 12. 
 agent: Do you have any connection limit? 
 customer: I need a connecting flight for my journey. 
 agent: Is there any other requirements? 
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 agent: May I know your name? 
 customer: Sure, my name is Karen Williams. 
 agent: Please wait a moment. 
 customer: Sure, I will wait for your response. 
 agent: Sorry, No flights found with your preferable dates. 
 customer: Not a problem, anyways thank you for the information. 
 agent: Thank you for reaching us.
customer: I need a flight which departures from my location in the afternoon.