customer: Hello. 
 agent: Hello, How can I assist you? 
 customer: I am Jeffrey Wilson from Washington. I am planning to celebrate my birthday in Detroit, so please book a flight ticket within a price limit of 1000. 
 agent: Sure, May I know the travel dates? 
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 agent: Please help me with your journey codes. 
 customer: My source and destination airport codes are DC - IAD, MI - DTW. 
 agent: Please wait a minute. 
 customer: Sure. 
 agent: Sorry, No flights found with your chosen dates. 
 customer: No problem, thank you. 
 agent: Thank you for availing us.
customer: I would like to fly on 07/13, return on 07/15.