customer: Hi. 
 agent: Hello, how may I aid you today? 
 customer: Nicole Parker here. I would like to book a ticket from DCA to SEA, can you please help me with that? 
 agent: Sure, we are glad to help you. Please kindly share your travel dates. 
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 agent: Sorry, there are no flights on your given route. 
 customer: That's ok, thank you for your help. 
 agent: Thank you for choosing us.
customer: The travel dates are from 04/30 to 05/02.