customer: Hello,. I am Susan Gonzalez. 
 agent: Hello, how can I help you? 
 customer: I need to book a flight ticket from Seattle to meet my grandparents after a long time in Washington. Can you please help me in booking? 
 agent: Sure, may I know your planned travel dates? 
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 agent: Please share me your source and destination codes. 
 customer: My source code is WA-SEA and destination code is DC-IAD. 
 agent: May I know your price limit? 
 customer: I can spend up to 5000. 
 agent: Please wait for a moment. 
 customer: Ok. 
 agent: Thanks for waiting, sorry to say that, no flights were found with your details. 
 customer: Ok, no issue. 
 agent: Thank you for opting us. 
 customer: Thank you for your support.
customer: My depart is on 03/17 and arrival on 03/19.