customer: Hi. 
 agent: Hello. How may I aid you today? 
 customer: Can you please help me in booking a ticket from ATL to DCA? As I'm planning to attend a wedding. 
 agent: I will help you with that. May I know your journey dates to proceed further? 
 customer: Sure, my departure date is 04/19 and return date is 04/21. 
 agent: May I know your name please? 
 customer: Yes, my name is Alexander Wilson. 
 agent: Wait for a while. I am sorry to say that there is no flight. 
 __ 
 agent: Thank you. 
 customer: That's ok, thank you for your information.
customer: Sure.