customer: Hi, I am Barbara Carter. 
 agent: Hello, how may I help you? 
 customer: I want to visit to Washington to enjoy Spring season with my college friends in the month on April. Can you be my helping hand in booking a flight ticket. 
 agent: Sure, I will help you. May I know your travel dates? 
 customer: Sure, I want to fly on 04/21 and 04/23. 
 agent: Could you provide your source and destination? 
 customer: Sure, my source and destination are from NC - CLT to DC - DCA. 
 agent: Do you have any other requirements? 
 customer: And please make sure my price limit should not cross 1000. 
 agent: Ok. 
 customer: And I would prefer a single connection in between. 
 agent: Ok, please wait for a while. 
 customer: Sure. 
 agent: We are happy to say, there is a flight of Delta airline, flight number : 1020. Connection limit is 1 and price is 100. May I proceed for booking? 
 customer: Yes, you can. 
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 customer: Thanks for your service. 
 agent: Thank you for choosing our agency.
agent: Your ticket is confirmed.