customer: Hello, I am Melissa King. 
 agent: Hello. How can I oblige you? 
 customer: Please book me a cheaper flight with in price 500. 
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 customer: I need to reach my destination by 11/18 and would return on 11/20 as I have an interview in between these dates. 
 agent: Can you share me your airport codes? 
 customer: I would board at MSP and land at DCA. 
 agent: Is there any connection limit? 
 customer: Yes, I need a break. 
 agent: There is a flight 1029 in delta airline and price 100 with a connection. 
 customer: Ok, please proceed. 
 agent: Shall I proceed? Reservation is done. 
 customer: Thanks for your service. 
 agent: Thank you.
agent: Sure. May I know your travelling dates?